Question

A uniform metre scale of mass 2kg is
suspended from one end. If it is displaced
through an angle 60° from the vertical, the
increase in its potential energy is,
​

Answer 1

Explanation:

since (60)=X/(0.5)

X=1/2×sin(60)

X=1/2×√3/2

=√3/4

potential energy - mgh

=2×10×√3/4

=5√3J