In: Physics
16. What is the minimum diameter of a brass rod if it
is to support a 400 N load without exceeding the elastic limit?
Assume that the stress for the elastic limit is 379 MPa.
17. A body is rotating according to the equation alpha = 3t where
alpha is in rad/s2 and t is in sec. when t=0, the angular velocity
is 4 rad/s and angular distance is zero. Compute the angular
distance (rad) after t=2 sec. Answer in 2 decimal places.
18. A body is attached at the end of a cord from conical pendulum
for which the period is 1.5 sec. determine the radius of rotation r
if the cord rotates inclined at 30 degrees with the vertical.
Answer in 2 decimal places.
(KINDLY INCLUDE THE SOLUTIONS)