The ball rolls without slipping on the fixed surface as shown. What is the direction of the velocity of point A? a. → b. ↑ c. ↑ d. v e. v A

A 4 kg solid sphere has 0.5 m radius. It's moment of inertia is kg.m^2 O a. 0.3 O b. 0.25 O c. 0.2 O d. 0.4

A mass hangs by a massless string that is wound around a solid circular pulley of radius 20 cm. There is no friction in the pulley. The block is released from rest, and the pulley goes through three complete rotations (6 t radians) in 4 seconds. 0.2 m What is the direction of the angular velocity? A) Up B) Down C) Into the page D) Out of the page E) Unknown O A O B O E

Supposed each of the following pairs of initial and final angular positions, respectively, occurs in 1 s. Which choice represents the lowest average angular speed?A. -3 rad, -7 rad B. 7 rad, -3 rad C. -3 rad, +5 rad D. 7 rad, 5 rad

E SYSTEM (ACADEMIC) Physics I-Spring21 Time left 0:19:5 The following figure shows the cross section of a cylinder of radius 3.5 m rotating about its axis at 7.4 rad/s. The speed of the point P is: P O a. 25.90 m/s Ob. 25.90 rad/s O c. 81.37 m/s O d. Can not be determined 01 27rad /c

19. What happens to the tangential velocity of an object moving on a circular motion as its distance from the center decreases? a. the tangential velocity decreases b. the tangential velocity increases c. the tangential velocity remains constant d. the tangential velocity becomes zero

The earth spins on its axis once a day and orbits the sun once a year. Determine the average angular velocity of the earth as it spins on its axis and orbits the sun. In each case take the positive direction for the angular displacement to be the direction of the earths motion

The angular velocity of rotating body is expressed in terms of following unit, 1) Radians per second 2) Revolutions per minute 3) Revolutions per second Which one is correct? O a. Options 1 & 2 only b. * Option 1 only O C Options 1, 2 & 3 O d. Option 2 only

39. John observes a ball of radius 0. 0300 m rolling along a horizontal table at a constant linear speed of 5.20 m/s. If John observes the ball roll off the edge and fall a distance of 6.10 m vertically before hitting the floor. While the ball is in the air, what is the angular displacement John would observe? А. 19.3 rad В. No answer is correct C. 22.6rad D. 11.8 rad Е. 14.9 rad

An ice skater is spinning on the ice with her arms fully extended. When she pulls in her arms, she spins at a faster rate because     a. Her moment of inertia decreases.     b. Her moment of inertia increases.     c. Her moment of inertia stays the same.     d. Her mass stays the same.     e. Her weight stays the same.