Can work done by the following forces be expressed as potential energy? a. Weight b. Friction C. Spring force D. Normal force.
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A: According to question we need to find work done against gravity.
Q: 84. When is work done on an object? a. when a net force acts on an object b. when the object moves…
A: The work done on an object is W=Fnetd≠0 if Fnet≠0
Q: 6. You notice that an object is moving from point A to point B. The object measures a kinetic energy…
A: Given data: The kinetic energy at A is KE=6.75 J. The speed at A is vA=4.25 m/s. The speed at B is…
Q: 9. How much work must be done to extend a spring by 1.50 cm from its relaxed length if its spring…
A: Work: Work done on an object is defined as the scalar product of the force vector and the…
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A: Concept of Net work done on an object moving on frictional surface: A frictional surface causes an…
Q: A 80-N constant force exerted on a 15-kg object for 12 seconds. The initial velocity of an object is…
A: ANS(a) Given : Force = F = 80 N mass = m =15 kg time = t…
Q: 1. A 5 kg block is lifted vertically at a constant velocity of 12 m/s through a height of 12 m. a.…
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Q: 5. A factory worker pushes a 42.5-kg crate a distance of 11.2 meters along a level floor at a…
A: Given that: The mass of the crate is m=42.5 kg The distance is d=11.2 m The coefficient of kinetic…
Q: Find the work done in joules by gravity as an object of the mass m=11 kg is raised up at constant…
A: Potential energy is defined as U=mgh Here m is mass, h is height and g is gravitational acceleration…
Q: How much work (in J) must be done to lift a stack of bricks, which has a mass of 50 kg, from the…
A: Given data The given mass is m=50 kg The height is h=8 m The accleration due to gravity is g=10 m/s2…
Q: A. 1. What happens when a force exerted on an o Potential energy is created. Kinetic energy is…
A: Introduction: Newton's first law of motion states that an object stays in its state of rest or…
Q: 2. A 10-kg mass is dragged on a horizontal frictionless surface by a force F(x) = 2x + 1 (N) that…
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Q: 270kg load is lifted 21.0m vertically with an acceleration a=0.170g by a single cable. A. Determine…
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Q: 1. If you pushed a 20 kg box across the floor for a distance of 60 m with a force of 15 N how much…
A: #1 Given data: The mass of box is m=20 kg. The distance traveled by the box is d=60 m. The force…
Q: 1. A constant force of 1200 N is applied to a 150-kg block along a rough horizontal surface at an…
A: See below
Q: The work done in stretching a spring-mass system a distance x from its rest position is U = kx² /2.…
A: Solution - We are given that the work done in stretching the spring-mass system a distance x from…
Q: A 5.5 kg bird is flying 12 m above the ground. What is the Potential energy of the bird is…
A: Mass of bird (m) = 5.5 kg Height of bird above ground (h) = 12 m g = 9.8 ms2
Q: What is the kinetic energy of a 1400 kg car traveling at 5.3 m/s? A. 7.4 x 103 J B. 2.0 x 104 J…
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Q: A 13 kg mass object initially has 2500 J of kinetic energy. -1200 J of net work is then done on the…
A: Given: The mass of the object is 13 kg. The initial kinetic energy of the object is 2500 J. The net…
Q: A child lifts a 5 kg box up from the floor. The child then carries the box with constant speed of 1…
A: Given : m = 5 kg v = 1 m/s
Q: If the net work done on a particle is zero, which of the following statements must be true? a. The…
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Q: A 95 kg man runs up a 20 m high stairs at a constant speed. If it takes him 8 seconds to reach the…
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Q: What is the gravitational potential energy of a 300 N cat at a height of 6 meters? A. 183 N B.…
A: Option C Is the right answer 1800 J
Q: Which of these would have the greatest potential energy? A. A roller coaster at the top of a hill.…
A: To determine Maximum potential energy of a Roller Coaster Ride
Q: 4. A body moves a distance of 10 m under the action of a force that has a constant value of 5.5 N…
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Q: How much Gravitational Potential Energy does 5000 gallons (18,925 kg) of water have in a 50 meter…
A: Solution: Given that mass of water m = 18925 kg height from the earth surface = 50 m
Q: A 240 kg cable that is 100 m long hangs vertically from the top of a tall building. a. How much work…
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Q: what is the kinetic energy in joules of a 1120-kg automobile traveling at 88 km/h? 2. how much…
A: Given, Mass, m = 1120 kg Speed, v = 88 km/h = 88×518=24.44 m/s
Q: 12. When you go upstairs, you a. do more work when you walk than when you run b. do less work when…
A: 12.) Work depends on force and displacement only as force acting during running or walking is weight…
Q: What is the potential energy of a 15 kg dumbbell sitting on a weight bench 0.65 m above the floor?…
A: Given that, Mass of a dumbbell, m = 15 kg It is placed on a bench 0.65 m above the floor. We need to…
Q: 5. If the sign for work is negative, * O a. Kinetic energy is increasing. O b. Kinetic energy is…
A: work energy theorem. Work done is equal to change in Kinetic energy. W = K.E 2- K.E 1 K.E. 2 -…
Q: Item 19 If a car stops suddenly, you feel "thrown forward." We'd like to understand what happens to…
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Q: Make a motion chart for a cannonball launched with an initial speed of 20m/s. Neglect drag and the…
A: initial velocity of the ball, u=20 m/s this ball will face a downward acceleration due to gravity at…
Q: III. WORK 8. How much work was done by a machine that exerts a 5000 N force to compress a…
A: Given, Force applied by machine, F = 5000 N compress a 10 m long steel bar so it becomes 3 m
Q: 1. A block of mass 12.0 kg is placed on a rough incline with an angle of 30° (g = 10 m/s²). The…
A: Consider the following diagram A block of mass m=12kg is on an inclined plane. The forces acting on…
Q: 7. A ball is thrown straight up. Neglecting air resistance, which statement is not true regarding…
A: A ball is thrown straight up with some initial velocity. Air resistance is neglected.
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