A block of mass `1kg` is connected with a massless spring of force constant `100 N//m`. At `t = 0`, a constant force `F = 10N` is applied on the block. The spring is in its netural length at `t = 0`. The speed of particel at `x = 6cm` form mean position is

Options

A. `4 cm//s`
B. `10 cm//s`
C. `80 cm//s`
D. `50 cm//s`

Answer

C

Explanation

`A = (F)/(K), omega =sqrt((K)/(m)), V = omega sqrt(A^(2) - x^(2))`