Determine through what angle did it turn

Reference no: EM13342350

1. A 50 kg cylinder of radius 20 cm starts from rest and reaches 2.0 revolutions per second after 2.0 seconds. Assume the angular acceleration is constant during this time.

a) What is the angular acceleration?

b) Through what angle did it turn?

c) What is the moment of inertia about a vertical axis passing through its centre?

d) What torque must have been applied to the cylinder during the 2.0 seconds?

e) At the end of the 2.0 seconds, what is the rotational kinetic energy?

2. As the earth goes round the sun, its orbit is approximately circular.

a) What is its angular velocity?

b) What is its angular acceleration?

c) What is its acceleration?

d) What is its speed?

Reference no: EM13342350

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