A merry-go-round has | = 319 kg m², and is initially rotating at 2.33 rad/s. A 25.8 kg kid hops on, 1.40 m from the axis. What is the new angular velocity? [?] rad/s Hint: The

page A person 1.56 m tall swings their leg from the hip at 1.51 radians/s. Calculate the linear tangential velocity (v) at their knee to 2 decimal places. Answer. re to search 561 R T 6 B N U 8 O Pa Next page d Construction on A20...

The 4.00-cm-long second hand on a watch rotates smoothly. What is its angular speed? Express your answer in radians per second to three significant figures. What is the speed of the tip of the hand?

Km A bicycle trave ling 15 * has wheels of 35 inch diameder. a) What is the angular speed of Hhe wheel s about their axis af rotation? stop unifurmly It the bigele is brought do in 25 turns of the wheels b) what is the angular accelera toon ? c) how dur does the bicyck travel during this braking time?

An ultracentrifuge accelerates from rest to 9.97×10^5 rpm in 1.51 min. What is its angular acceleration in radians per second squared? What is the tangential acceleration of a point 9.10 cm from the axis of rotation? What is the radial acceleration in meters per second squared and in multiples of ? of this point at full revolutions per minute?

A merry-go-round is a common piece of playground equipment. A 5 m diameter (that's diameter) merry-go-round rotates frictionlessly. It has a mass of 166 kg and is spinning at 22 rpm (that's revolutions/minute... you will want to convert to radians/sec). John runs tangent to the merry-go-round at 2.5 m/s in the same direction that it is turning. John's mass is 27 kg. He then jumps onto the MGR and sits halfway between the outer edge and the center.   (A)What is the initial angular momentum, LJ, of John? (B)What is the total initial angular momentum of the system? (C)Use Conservation of Angular Momentum to find the final angular speed of the merry-go-round?

The rotating blade of a blender turns with a constant angular acceleration 1.50(rad/s²]. A. How much time does it take to reach an angular velocity of 36. 0 [rad/s] starting from rest? Through how manry revolutions does the blade turn in this time interval? C. What are the tangertial acceleration and tangential speed of an ant sitting on the blade 10.0 [cm) from the axis of rotation during the end of this irterval? D. What is the moment of inertia ofthe ant if its mass is 10.0 (g? E. What is the rotational kinetic energy of the ant? B.

A merry-go-round is a common piece of playground equipment. A 5 m diameter (that's diameter) merry-go-round rotates frictionlessly. It has a mass of 166 kg and is spinning at 22 rpm (that's revolutions/minute... you will want to convert to radians/sec). John runs tangent to the merry-go-round at 2.5 m/s in the same direction that it is turning. John's mass is 27 kg. He then jumps onto the MGR and sits halfway between the outer edge and the center. A)What is the rotational inertia of the merry-go-round (consider it a disk)? B)What is the initial rotational inertia of John (consider him a point mass). C)What is the initial angular momentum, Lmgr, of the merry-go-round? (D)What is the initial angular momentum, LJ, of John? (E)What is the total initial angular momentum of the system? (F)Use Conservation of Angular Momentum to find the final angular speed of the merry-go-round?

A cyclist starts from rest and pedals such that the wheels of his bike have a constant angular acceleration.After 18 s, the wheels have made 76 rev. What is the angular velocity of the wheels after 18 s in rad/s ? What is the angular acceleration of the wheels in rad/s2 ?If the radius of the wheel is 32 cm, and the wheel rolls without slipping, how far has the cyclist (in m) traveled in 18 s?

40. A flywheel slows from 600 to 400 rev/min while rotating through 40 revolutions. (a) What is the angular acceleration of the flywheel? (b) How much time elapses during the 40 revolutions?