The crankshaft in your car engine is turning at 3000 rpm. What is the shaft’s 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 0.24 m radius grinding wheel takes 5.8 s to speed up from 2.6 rad/s to 5.9 rad/s. What is the wheel’s average angular acceleration?

A 0.37 m radius grinding wheel takes 6.1 s to speed up from 2.9 rad/s to 6.8 rad/s. What is the wheel's average angular acceleration?

A lawnmower blade has a length of 0.75 m and a mass of 1.5 kg. The blade rotates around its center at an angular velocity of 500??????500revmin. The initial angular velocity of the lawnmower blade is Answer ????rads.

A blade with a 0.25 m radius starts from rest and rotates with an accleration of 0.25 rad/s2. what is its angular velocity after 10s?

A wheel experiences an angular acceleration of +4.3 rad/s². After making 6.6 revolutions, it has an angular speed of +45 rad/s. What was the wheel's initial angular velocity?

A top has a moment of inertia of 10.7 kg-m2. The top is spinning at 41 rpm. How much rotational kinetic energy (in joules) does the top have?

A 0.53 m radius grinding wheel takes 1.5 s to speed up from 2.2 rad/s to 6 rad/s. What is the wheel’s average angular acceleration?

A wheel is initially at rest then rotates with a constant acceleration of 2.0 rad/s2 . What is its angular speed after it has gone through a displacement of 5.0 rad?