Determine the kinetic energy of a circular disc rotating with a speed of 60 r.p.m- about an axis passing through a point on its circumference and perpendicular to its plane. The circular disc has a mass of 5 kg and radius 1 m.

B. A compact disk rotates from rest to 420 rev/min in 4.5 seconds. (a) How far does a point on the edge of the disk, radius 8.0 cm, travel during this interval? (b) If the disk has mass of 18.2 grams, what is its kinetic energy when rotating at 400 rev/min? (I = MR2) (c) What average power is needed to accelerate the disk to 420rev/min in 4.5 seconds?

A high-speed sander has a disk 4.10cm in radius that rotates about its axis at a constant rate of 1250 revolutions per minute. a) Determine the angular speed of the disk in radians per second. b) Determine the linear speed of a point 1.80cm from the disk's center c) Determine the centripetal acceleration of a point on the rim. d) Determine the total distance traveled by a point on the rim in 1.80s.

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A 16 gm DVD disc with a diameter of 120mm rotates with an angular speed of 115 rad/second. What is the Kinetic Energy of the spinning DVD?

A clay cylinder of radius 21 cm on a potter's wheel spins at a constant rate of 15 rev/s. The potter applies a normal force of 15.3 N to the clay with his hands where the coefficient of friction is 0.1 between his hands and the clay. What is the power (in W) that the potter has to deliver to the wheel to keep it rotating at this constant rate?

The paths of two small satellites, X and Y, of equal mass of 4.00 kg each, are shown below. They orbit around a massive star, as illustrated, with M = 6.20x1029 kg The orbits are in the plane of the paper and are drawn to scale. %3D a C In the statements below KE is kinetic energy, PE is potential energy, and L is magnitude of the angular momentum. At a, the PE of X is .... that of Y. v The speed of Y at c is .... that at a The L of X at p is .... that at u. At a, the KE of X is .... that of Y. The PE of Y at c is .... the PE of X at w Submit Answer Tries 0/12 Send Feedb

Imagine a spinning solid melon. It has a mass of 1.0 kg and a 18-cm diameter. It turns a rate of 77rev/min. Find its kinetic Energy If an additional 5.0mJ of energy are added to the rotational energy, what is the new angular velocity of the melon?

0 out of 15 p A grindstone has a radius of 13.00 cm and rotates at 13000 rev/min. What is the linear speed (in m/s) of a point on its edge? Selected Answer: O 31.6 Correct Answer: 176.79644 6/170 79644- 182 79644)

Two people start at the same place and walk around a circular lake in opposite directions. One has an angular speed of 2.05 x 10-3 rad/s, while the other has an angular speed of 3.78 x 10-3 rad/s. How long will it be before they meet? Number i Start Units 02 0₁ End