The angular velocity of a rotating rigid body increases from 250 to 1,800 rev/min in 115 s. (Enter the magnitudes.) A.)What is the angular acceleration of the body (in rad/s2)? B.)Through what angle (in rad) does it turn in this 115 s?

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 50 mm radius pulley A of the clothes dryer rotates with an angular acceleration of or= (2582) rad/s². where is in radians. (Figure 1) Figure 50 mm 1 of 1 Part A Determine its angular acceleration when f = 2 s. starting from rest Express your answer to three significant figures and include the appropriate Inits. 122.4 Submit HÅ Provide Feedback rad s² Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining

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 circular object rotates with an angular velocity ω=4.2t2 + 3.0. (Take [ω] = radians/second ). A. Find an expression for the angular acceleration ?(t). B. Calculate ?(t = 3 s). C. Calculate Δθ between 0 s and 3 s. Hint: See examples in Section 10.1 in the text.

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?

time of 5 rotations (16.5 s) Time of 1 rotation (3.3 s) Distance from shoulder to elbow (20.32cm) Distance from shoulder to middle of hand (56.99cm) ​A. What was the average angular acceleration (degrees/s2and rad/s2) of the hand?  How do you know?​B. What was the average centripetal acceleration (m/s2) of the hand?  (Hint: remember, it is going in a circle and acp = v2/r.)

Please answer, thanks. Dynamics..

A power drill starts from rest and undergoes uniform angular acceleration for a period of 0.175 s until it turns at a rate of 2.65 ✕ 104 rev/min.A.What is the drill's angular acceleration (in rad/s2)? (Enter the magnitude.)B. What is the angle (in radians) through which the drill rotates during this period? (Enter the magnitude.)

An ultracentrifuge accelerates from rest to 9.97 x 105 rpm in 1.51 min. What is its angular acceleration in radians per second squared? angular acceleration: What is the tangential acceleration of a point 9.10 cm from the axis of rotation? tangential acceleration: radial acceleration: rad/s² What is the radial acceleration in meters per second squared and in multiples of g of this point at full revolutions per minute? radial acceleration in multiples of g: m/s² m/s²