Question

A thin, uniform, 15.5 kg post, 2.35 m long, is held vertically using a cable and is attached to a 5.00-kg mass and a pivot at its bottom end (the figure (Figure 1)). The string attached to the 5.00-kg mass passes over a massless, frictionless pulley and pulls perpendicular to the post. Suddenly the cable breaks.

A) Find the angular acceleration of the post about the pivot just after the cable breaks.

B)Will the angular acceleration in part (A) remain constant as the post falls (before it hits the pulley)?(YES/NO)

C)What is the acceleration of the 5.00-kg mass the instant after the cable breaks?

D)Does the acceleration in part (C) remain constant? (YES/NO)

Answer 1