What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.

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Answer 1

Textbook Question

Chapter 9, Problem 1CQ

What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

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The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE DO NOT USE LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!

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The force of the quadriceps (Fq) and force of the patellar tendon (Fp) is identical (i.e., 1000 N each). In the figure below angle in blue is Θ and the in green is half Θ (i.e., Θ/2). A) Calculate the patellar reaction force (i.e., R resultant vector is the sum of the horizontal component of the quadriceps and patellar tendon force) at the following joint angles: you need to provide a diagram showing the vector and its components for each part. a1) Θ = 160 degrees, a2) Θ = 90 degrees. NOTE: USE ONLY TRIGNOMETRIC FUNCTIONS (SIN/TAN/COS, NO LAW OF COSINES, NO COMPLICATED ALGEBRAIC EQUATIONS OR ANYTHING ELSE, ETC. Question A has 2 parts!

Answer 2

Textbook Question

Chapter 9, Problem 1CQ

What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 3

Textbook Question

Chapter 9, Problem 1CQ

What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 9, Problem 1CQ

What can you say about the velocity of a moving body that in dynamic equilibrium? Draw a sketch of such a body using clearly labeled arrows to represent all external forces on the body.

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

Answer 8

Expert Solution & Answer

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

To determine

The velocity of a moving body that is dynamic equilibrium and sketch a diagram of such a body.

Answer 12

Answer to Problem 1CQ

The velocity of a body in dynamic equilibrium is a constant, both in magnitude and direction.

Answer 13

Explanation of Solution

Introduction:

A body is said to be in equilibrium if the total force on the body is zero. On this basis, there are two kinds of equilibria- static equilibrium and dynamic equilibrium. According to Newton's first law, a body continues to be in the state of rest or in the state of uniform motion in a straight line, unless acted upon by an external unbalanced force. Further, Newton's second law implies that an unbalanced force produces an acceleration.

The sum of the forces acting on a body which is in dynamic equilibrium is zero. Therefore, the body experiences no acceleration. As a result, its velocity does not change. Thus, the body which is in dynamic equilibrium moves with a constant velocity.

Consider a block of weight W, acted upon by a force F. The block is placed on a horizontal surface. The surface exerts an upward force F_Ncalled the normal force on the block. A force of friction f acts between the surface and the block. The block moves towards the right with a velocity v.

The forces W and F_Nare equal and opposite. Thus, the sum of the forces along the vertical direction is zero. If the applied force F and the force of friction f have equal magnitudes but they are directed opposite to each other. Thus, the net force along the horizontal is also equal to zero. The sum of the forces acting on the block, being zero, the block is not accelerated. Thus, the velocity of the block remains constant. It continues to move with the same speed v and in the same direction.

A diagram representing the forces is shown below.

College Physics for AP Courses, Chapter 9, Problem 1CQ

Conclusion:

A moving body under dynamic equilibrium moves with a constant velocity.