A ladder 13 m long leans against a wall. The foot of the ladder is pulled along the ground away from
Channel: Doubtnut
Date: 24/05/2020

A ladder 13 m long leans against a wall. The foot of the ladder is pulled along the ground away from the wall, at the rate of 1.5 m/s. How fast is the angle `theta` between the ladder the ground changing when the foot of the ladder is 12 m away from the wall?