A particle of mass 0.3 kg subject to a force `F=-kx` with `k=15N//m`. What will be its initial acceleration if it is released from a point 20cm away from the origin?

Options

A. (a) `15m//s^2`
B. (b) `3m//s^2`
C. (c) `10m//s^2`
D. (d) `5m//s^2`

Answer

C

Explanation

Mass (m) `=0.3kgimplies F = m.a =15x`
`a=-15/0.3x=150/3x=50xa=50xx0.2=10m//s^2`