A disc rotates at 90 rpm (revolutions per minute). What is the angular speed (in rad/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?

A wheel with a 21 inch diameter is turning at a rate of 44 revolutions per minute. To the nearest inch, what is the speed of a point on the rim in in./min?

The angular speed of a wheel decreases uniformly from 34.0 rad/s to 2.0 rad/s in 18.0 s.A. Find the constant angular acceleration in rad/s^2.B. Find the number of revolutions made by the wheel in this time.

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?

3. 4. 6. A wind turbine makes one complete revolution in 2.3 s. What is its rotational velocity? rad/s

Pls.help.

A disk spins at 4.0 revolutions/second. What is its period, in second? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

Ā CEEE pletion Status: QUESTION 22 The coordinate of an object is given as a function of time by 0 = 7t-32, where 0 is in radians and it is in seconds. Its angular velocity at t = 3 s is: OA. 1.0 rad/s OB.-11 rad/s OC.-3.7 rad/s OD. 11 rad/s OE. 3.7 rad/s ings to the same rod and rotate around it, as shown below. Rank the balls according to their rotational

Plz use g = 9.8 m/s2 to find if needed