Question

A spring with force constant k is placed horizontally in equilibrium position. On stretching/compressing the spring through a distance x, the spring energy stored is? ​

Answer 1

Equating force we get μmg=kx

x=

k

μmg

Potential energy PE=

2

1

kx

2

=

2

1

k

μ

2

m

2

g

2