If a street light of mass M is suspended from the end of a uniform rod of length L in different possible patterns as shown in figure, then:

Options

A. pattern `B` is more sturdy
B. pattern `C` is more sturdy
C. pattern `A` is more sturdy
D. all will have same sturdiness

Answer

C

Explanation

( c) For equilibrium of street light,
`mg xx x = T xx y`
or `T = (mg.x)/(y)`
For `T` to be mimimum, `y` should be maximum.
Hence, pattern `A` is more sturdy.
.