The small $0\mathrm{.}19-kg$ slider is known to move from position $A$ to position $B$ along the vertical$-$plane slot. Determine $($a$)$ the work done on

the body by its weight and $(b)$ the work done on the body by the spring. The distance $R=0\mathrm{.}81m,$ the spring modulus $k=160\frac{N}{m},$ and

the unstretched length of the spring is $0\mathrm{.}62$ m $.$

Answers:

$($a$)$ Work done on the body by its weight:

$($b$)$ Work done on the body by the spring: $U_s=$