# Question: Circular disks are used in automobile clutches and transmissions When

Circular disks are used in automobile clutches and transmissions. When a rotating disk couples to a stationary one through frictional force, the energy from the rotating disk can transfer to the stationary one.

(a) Is the angular speed of the coupled disks (1) greater than, (2) less than, or (3) the same as the angular speed of the original rotating disk? Why?

(b) If a disk rotating at 800 rpm couples to a stationary disk with three times the moment of inertia, what is the angular speed of the combination?

(a) Is the angular speed of the coupled disks (1) greater than, (2) less than, or (3) the same as the angular speed of the original rotating disk? Why?

(b) If a disk rotating at 800 rpm couples to a stationary disk with three times the moment of inertia, what is the angular speed of the combination?

## Relevant Questions

A bocce ball with a diameter of 6.00 cm rolls with-out slipping on a level lawn. It has an initial angular speed of and comes to rest after 2.50 m. Assuming constant deceleration, determine (a) The magnitude of its angular ...While repairing his bicycle, a student turns it upside down and sets the front wheel spinning at 2.00 rev/s. Assume the wheel has a mass of 3.25 kg and all of the mass is located on the rim, which has a radius of 41.0 cm. To ...Modern bowling alleys have automatic ball returns. The ball is lifted to a height of 2.00 m at the end of the alley and, starting from rest, rolls down a ramp. It continues to roll horizontally and eventually rolls up a ramp ...Water towers (storage tanks) are generally bulb shaped, as shown in Fig. 9.29. Wouldnâ€™t it be better to have a cylindrical storage tank of the same height? Explain. Here are two common demonstrations of Bernoulli effects: (a) If you hold a narrow strip of paper in front of your mouth and blow over the top surface, the strip will rise (Fig. 9.33a). (Try it.) Why? (b) A plastic egg is ...Post your question