Question

A thin rod of mass 0.600 kg and length 1.38 m is at rest, hanging vertically from a strong, fixed hinge at its top end. Suddenly, a horizontal impulsive force (15.2î) N is applied to it.

(a) Suppose the force acts at the bottom end of the rod. Find the acceleration of its center of mass.

a = ? m/s2

(b) Find the horizontal force the hinge exerts.

F = ? N

(c) Suppose the force acts at the midpoint of the rod. Find the acceleration of this point.

a= ? m/s2

(d) Find the horizontal hinge reaction force.

F = ? N

(e) Where can the impulse be applied so that the hinge will exert no horizontal force? This point is called the center of percussion.

? m (from the top)

Answer 1