The robbers cut down the telephone wires.

Find the error in the given sentence . The robbers broke in the house at night.

A small mass m and its supporting wire because a simple pendulum when the horizontal cord is cut . Find the ratio of the tension in the supporting wire immediately after the cord is cut to the tension in the wire before the cord is cut

When a labourer cuts down a tree, he makes a cut on the side facing the direction in which he wants it to fall. Why ?