Question

A body performing linear S.H.M. experiences a force of 0.2 N when displaced through 4 cm from the mean position. Its force constant will be ______.

Options

• 2 N/m

• 2.5 N/m

• 5 N/m

• 8 N/m

Answer 1

A body performing linear S.H.M. experiences a force of 0.2 N when displaced through 4 cm from the mean position. Its force constant will be 5 N/m.

Explanation:

K = `F/x`

Putting F = 0.2 N and x = 4 cm = 4 × 10⁻² m

∴ K = `0.2/(4 xx 10^-2)`

= `(0.2 xx 10^2)/4`

= `20/4`

= 5 N/m