A rod of length 2.8 m is hinged at one end, and a force of magnitude
F = 14 N
is applied at the other (see figure below).

(a) If the magnitude of the torque associated with this force is
31 N · m,
what is the angle ϕ ?
°

(b) What is the sign of the torque?
negative
positive

Acentrifuge in a medical laboratory rotates at an angular speed of 3,700 rev/min. when switched off, it rotates through 54.0 revolutions before coming to rest. find the constant angular acceleration (in rad/s2) of the centrifuge. your response is within 10% of the correct value. this may be due to roundoff error, or you could have a mistake in your calculation. carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. rad/s2