Pulley A Figure 2 (c) A block of mass M is attached to Pulley A , as shown in Figure 2. The block is released from rest. Describe how the net torque exerted on the pulley and the magnitude of the angular momentum of the pulley are changing, if at all, a short time after the block is released. Net torque: Increasing Decreasing Not changing Angular momentum: Not changing Increasing Decreasing Briefly describe how you arrived at your answers.

Pulley A Figure 2 (c) A block of mass M is attached to Pulley A , as shown in Figure 2. The block is released from rest. Describe how the net torque exerted on the pulley and the magnitude of the angular momentum of the pulley are changing, if at all, a short time after the block is released. Net torque: Increasing Decreasing Not changing Angular momentum: Not changing Increasing Decreasing Briefly describe how you arrived at your answers.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 21CQ: Jet turbines spin rapidly. They are designed to fly apart if something makes them seize suddenly,...

See similar textbooks

Similar questions

1.Two identical dumbbells fly towards each other at speeds of v1 and v2 as shown in the figure. The distance between the dumbbells balls is l. How will the dumbbells move after an elastic collision? 2. How do moments of inertia of a cube differ with respect to axes OO and O’O’? 3.A platform rotates in the indicated direction with an angular velocity. How will the movement of the platform change if the person moves from its center to the edge?
Consider again the pairs of angular positions for the rigid object in Quick Quiz 10.1. If the object starts from rest at the initial angular position, moves counterclockwise with constant angular acceleration, and arrives at the final angular position with the same angular speed in all three cases, for which choice is the angular acceleration the highest?
Jet turbines spin rapidly. They are designed to fly apart if something makes them seize suddenly, rather than transfer angular momentum to the plane's wing, possibly tearing it off. Explain how flying apart conserves angular momentum without transferring it to the wing.
Jogger 1 in the figure(Figure 1) has a mass of 70.3 kg and runs in a straight line with a speed of 3.35 m/s. What is the magnitude of the jogger's linear momentum? What is the magnitude of the jogger's angular momentum with respect to the origin, O?
University Physics 1 - Rotation, Angular momentum, and Torque I need help with this problem and an explanation of the solutions described below: If the net force on a system is zero, is the net torque also zero? If the net torque on a system is zero, is the net force also zero? Explain.
Please answer all. Thank you 9. The distance AF is the ______ weight of the student at point A.a. Torque b. moment arm c. angular momentum d. none of these13. Two object sin circular motion have the same mass and, linear speed. If object 1 movesalong on a circular path with radius twice the radius of the path of object 2 which object hasa larger angular momentum?a. Object 1 b. object 2 c. both have equal angular momentum d. none of these14. A wind blowing towards the northeast would mean a direction at an angle of _________.a. 45 degrees b. 180 degrees c. 90 degrees d. none of these29. A thermodynamic system characterized by inability to absorb or scape of matter from asystem and its environment.a. isolated b. closed c. open d. none of these
Junior throws his mashed potatoes onto his mother's lazy susan, which has a moment of inertia I. If the potatoes have a mass m, a horizontal velocity of v and hit at a distance d from the center, what is the final angular velocity of the turntable and potatoes? A lazy susan is a turntable used on a dining table. Take it to be frictionless.
(I) A 52-kg person riding a bike puts all her weight on eachpedal when climbing a hill. The pedals rotate in a circle ofradius 17 cm. (a) What is the maximum torque she exerts?(b) How could she exert more torque?
A thin, light string is wrapped around the rim of a 3.75-kgkg, solid, uniform disk (similar to a puck on ice without friction) that is 33.0 cmcm in diameter. A person pulls on the string with a constant force of 98.00 NN tangent to the disk, as shown in the figure below (Figure 1). The disk is not attached to anything and is free to move and turn. Part A Find the angular acceleration of the disk about its center of mass. Express your answer in radians per second squared. Part B Find the linear acceleration of its center of mass. Express your answer in meters per second squared. Part C If the disk is replaced by a hollow, thin-walled cylinder of the same mass and diameter, what will be the angular acceleration of the disk about its center of mass? Express your answer in radians per second squared. Part D If the disk is replaced by a hollow, thin-walled cylinder of the same mass and diameter, what will be the linear acceleration of its center of mass? Express your…
Please do the parts after the child has jumped on! So #2, 3, and 4 2.) A 20kg child is spinning on a carousel (radius =1.5m) and accelerates to a speed of 2 m/s. 1. What is the angular velocity of the carousel? The child then jumps on 2. What is the force exerted by the child if he is hanging on the bar at the edge of the carousel? 3. Now, the child moves closer inside of the carousel and is 0.5m from the center. What is the new force of the child hanging onto the bar? What is the new force if he is 0.7m from the center? 4. After 2 minutes, the carousel slowed down at about 25%. What is the total angular displacement of the carousel during the 2 minute time (in revolutions)?
Colin from Banks Bikes wants to test the effectiveness of a set of hydraulic brakes on a new Scott electric gravel bike for Drew, one of his favorite customers. Colin clamps the bike into the repair stand and rotates the pedals to start the rear wheel spinning from rest to its final angular velocity of 230 rpm in 5.3 seconds. a) Calculate the angular acceleration of the rear wheel in rad/s2? b) If Colin now slams on the bike's brakes, causing an angular deceleration of -88 rad/s2, how long does it take in seconds for the back wheel to stop spinning?
Part A A car is traveling at a constant speed on the highway. Its tires have a diameter of 67.0 cm and are rolling without sliding or slipping. If the angular speed of the tires is 50.0 rad/s, what is the speed of the car? Express your answer with the appropriate units.