Question

If a spring has a constant of `6 (kg)/s^2`, how much work will it take to compress the spring `7 cm`?

Answer 1

work done in compressing x unit is given by
`w=1/2kx^2`,where k = spring constant
In this case
x = 7 cm=`7/100`m
k= 6`(kg)/s^2`
`:.w=1/2*6*7*10^-2=0.21`J