A weight w is suspended from the mid -point of a rope, whose ends are at the same level In order to make the rope perfectly horizontal, the force applied to each of its ends must be

Options

A. less than W
B. equal to W
C. equal to 2W
D. infinitely large

Answer

d

Explanation

shown here
For equilibrium of the body
`W = 2 T cos theta` or `T = (W)/(2 cos theta)`
For the rope to be horizontal `theta = 90^(@)` ,
`T = (W)/(2 cos 90^(@)) = oo`
.