Author Question: A uniform solid sphere has a moment of inertia I about an axis tangent to its surface. What is the ... (Read 30 times)

cool · **on:** Jul 29, 2018

A uniform solid sphere has a moment of inertia I about an axis tangent to its surface. What is the moment of inertia of this sphere about an axis through its center?

A) 1/7 I
B) 2/7 I
C) 2/5 I
D) 3/5 I
E) 7/5 I

Question 2

A machinist turns the power on to a grinding wheel, which is at rest at time t = 0.00 s. The wheel accelerates uniformly for 10 s and reaches the operating angular velocity of

The wheel is run at that angular velocity for 37 s and then power is shut off. The wheel decelerates uniformly at until the wheel stops. In this situation, the time interval of angular deceleration (slowing down) is closest to:
A) 17 s
B) 15 s
C) 19 s
D) 21 s
E) 23 s