Which of the following quantities is zero if torque on a particle is zero? a) Angular momentum of the particle b) Angular speed of the particle c) Change in kinetic energy of the particle d) Rate of change of angular momentum
Q: A solid disk of radius R = 2m and mass 10 kg is fixed by its center to a flat surface. A force of 10…
A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…
Q: 4. Walk around a Lake - Two people start at the same place and walk around a circular lake in…
A: We can use relative speed concept.i.e assuming one at rest and other covering whole circle with…
Q: A bar on its hinges starts from rest and rotates with angular acceleration of a=0.10 rad/s/s. During…
A: Given data: Angular acceleration, α=0.10 rad/sec2 Time, t=10 s Our question is to find the angle θ
Q: 8) A 30-cm-radius wheel is rotating with an angular speed of 12 rad/s. It experiences a constant…
A: (a) The expression for the angular acceleration of the wheel can be written as ω=ω0+αtα=ω-ω0tα=1…
Q: 1. A particle with mass 5 kg moves in a circle of radius 4 m. The angular momentum of the particle…
A:
Q: a. If the net force on an object is zero does it mean the net torque is zero as well? Explain.
A:
Q: Which among the following statements is CORRECT? A.) Maximum torque for a given force and lever arm…
A:
Q: A Force F = (i+2j) N is acting on a point with position vector r= (2i-4j)m. What is the…
A:
Q: What direction is the torque on the object shown, about the pivot axis shown? (ignore gravity) A) →…
A: Introduction: The torque is rotationall equivalant of linear force, it is equal to the cross product…
Q: A drill is moving at 6 rad/s when it speeds up at 2 rad/s² for 3 s. Find the angular velocity at the…
A:
Q: A spherical ball with mass 0.2 kg and radius 0.1 meters laying on a table. It is hit by a…
A: a) The angular acceleration is, b) The required moment of inertia,
Q: According to conservation of angular momentum, if the moment of inertia of a rotating object is…
A: Write the equation for the angular momentum. L=Iω ........ (1) Here, The linear momentum of the…
Q: 8. A spherical bowling ball with a mass of 5.3 kg and radius of 10.1 cm rolls down an incline from a…
A:
Q: In the figure, a 0.400 kg ball is shot directly upward at initial speed 24.2 m/s. What is the…
A: Given :- mass of ball = 0.400 Kg initial speed = 24.2 m/s d = 1.03 m
Q: A constant net torque is applied to an object. Which one of the following will NOT be constant? A)…
A: Torque is given as , T = Iα (1) From equation (1) we can say that if torque is constant that…
Q: a) What happens to an object's moment of intertia about the axis of rotation as it moves outward…
A: Given, when object moves outward from the center of a rotating disk then what will effects on the…
Q: Use Newton's Second Law () to solve for the mass of the apple. Explain how you used Newton's Second…
A: Given:- M= mass of disk= 2.776 kg Let m= mass of the apple
Q: Which of the statements is true regarding a thin rod that has zero net torque acting on it? 1)The…
A: T = I(alpha) I = moment of inertia ( doesn't change) Alpha = angular acceleration
Q: An object starts from rest and over a time T it reaches an angular speed of 10 rad/s by being…
A:
Q: Flying Circus of Physics A bowler throws a bowling ball of radius R = 11 cm along a lane. The ball…
A:
Q: 10) A figure skater wants to increase her rotational speed by a factor of 3. a) By what factor…
A: There is no net torque on figure skater(angular acceleration = 0)
Q: PM John, who has a mass m = 44 kg, was so excited to be taken to the playground on a sunny day. He…
A:
Q: a) Which of these cannot tell you the angular velocity of a wheel (by itself)? A) "The wheel spins…
A: Since you have asked multiple questions, we will solve the first question for you. If you want any…
Q: Flying Circus of Physics A bowler throws a bowling ball of radius R = 11 cm along a lane. The ball…
A: The objective of the question is to find the linear acceleration, angular acceleration, the time and…
Q: The following questions refer to the second hand of a clock. The rotational inertia of the second…
A: Since we are entitled to answer up to 3 sub-parts, we’ll answer the first 3 as you have not…
Q: 8) The pulley has a mass of 1.2 kg and a radius of 8 cm. It has the shape of a disk. Find the…
A: The masses are 3kg and 12kg Radius of the pulley is 8cm
Q: 4) A force at ŕ = 1.00 N i – 1.00 N j + 1.00 N k is applied to an particle with mass m=1.00 kg at…
A:
Q: Suppose a solid sphere of mass M and radius R rolls without slipping down on inclined plane starting…
A:
Q: If initial angular velocity is 0 deg/s (w), which of the following situations would result in the…
A:
Q: While sitting in physics class one day, you begin to ponder the workings of the analog clock on the…
A: A)The second-hand makes 1 revolution in a minute. Thus, the second-hand makes 49 revolutions before…
Q: angular momentum remains the same, rotational kinetic energy increases angular momentum remains the…
A: When girls moves outside then perpendicular distance from center is increases and Angular momentum…
Q: A person of mass 78 kg stands at the center of a rotating merry-go-round platform of radius 2.9 m…
A: Given: The mass of the person is 78 kg. The moment of inertia of the merry-go-round is 840 kg.m2.…
Q: Two circular objects with the same radii and mass but different moments of inertia rol down a ramp.…
A:
Which of the following quantities is zero if torque on a particle is zero?
a)
b) Angular speed of the particle
c) Change in kinetic energy of the particle
d) Rate of change of angular momentum
Step by step
Solved in 2 steps
- a) Convert the following angles from degrees to radians: 15°, 35°, 80°, 95°, 180°b) Convert the following angles from radians to degrees: 0, π/6, 1.2π, 3, 6c) A propeller blade with a diameter of 5 m has an initial angular velocity of 42 rad/s and a constant angular acceleration of -15 rad/s2. What is the angular velocity after 5 revolutions? How much time does it take to complete these 5 revolutions?A rotating solid sphere, (mass = 1kg, radius = 25 cm) starts to spin from rest with a constant angular acceleration of a =1.5 rad / s². After 5s, what is: • The angular velocity of the sphere • The number of rotations (please include fractional answers) The rotational kinetic energy of the sphere if I =MRA particle of mass 0.300 kg is attached to the 100-cm mark of a meterstick of mass 0.150 kg. The meterstick rotates on the surface of a frictionless, horizontal table with an angular speed of 6.00 rad/s. a) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 50.0-cm mark. b) Calculate the angular momentum of the system when the stick is pivoted about an axis perpendicular to the table through the 0-cm mark.
- A figure skater brings her arms up to her body A figure skater spins at angular speed rotation of 2 revolutions per second with its two perpendicular arms to his body: in this position, his moment of inertia is 3 kg.m^2. When she brings her arms to her body, its moment of inertia is only 1.5 kg.m^2: calculate its rotational kinetic energy in this position. (We neglects the friction between the runners and the ice.)Hello, can you help me with this problem please? Thank you!Problem A) At a circus you see a man spinning plates with radii of 75 cm on top of long poles. The plates have a constant angular acceleration of 0.6 rad/s?. Assuming the plates start from rest, after a time of 8 seconds calculate a) how many revolutions they have made, b) their angular velocity, c) their tangential acceleration, d) their radial acceleration, and e) their overall acceleration, magnitude and direction with respect to the edge of the disk.
- 2) A bicycle has wheels with radius of r=0.25m, and the bicycle is traveling at a constant speed of vb=4.00m/s. a) What is the angular speed of the wheels? b) What is the acceleration of a point on the outside edge of the bicycle tire? Draw a pictorial representation of the acceleration and velocity vectors at that point. c) The wheel slows down. Draw a pictorial representation of where the acceleration and velocity vectors now point. (for the same point on the outside edge of the bicycle tire).How can you show the relationship between applied torque and change in angular momentum?Conservation of Angular Momentum An example of conservation of angular momentum is jumping on a Merry-Go-Round. Watch this video (it starts part way through but the only thing you miss is the people pushing the Merry-Go-Round) to see someone jumping on a Merry-Gr-Round in motion like this problem. You can model the Merry-Go-Round as a solid disk with a radius of 3.00 m and a mass of 75.5 kg. Initially the Merry-Go-Round has an angular velocity 7.90 radians / second. Then the person jumps on and change the Moment of Inertia of the system. The person lands on the outer edge of the Merry-Go-Round and has a mass of 60.0 kg. What is the final angular velocity of the system after the person jumps on? You can treat the person that jumps on a point mass (which means they are significantly smaller than the radius of the Merry-Go-Round) for this problem. Your answer should have the following: 2 Decimal Places Correct SI Units Appropriate Signs for Vector quantity answers Answers must be in the…