A car on a circular track with a radius of 0.30 km accelerates from

rest with a constant angular acceleration of a magnitude 4.5 * 10^3

rad/s^2

a. How long does it take the car to make one lap around the track?

b. What is centripetal and angular acceleration of car when it completes

half a lap?

The space between two 15-in.-long concentric cylinders is filled with glycerin (viscosity = 8.5 × 10-3 lb·s/ft2). the inner cylinder has a radius of 1 in. and the gap width between cylinders is 0.1 in. determine (a) the torque and (b) the power required to rotate the inner cylinder at 180 rev/min. the outer cylinder is fixed. assume the velocity distribution in the gap to be linear.