A1.5 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of initial position of the block is x-0.

A1.5 kg block is initially at rest on a horizontal frictionless surfac

1.	A1.5 kg block is initially at rest on a horizontal frictionless surface when a horizontal force in the positive direction of initial position of the block is x-0.
Answer» SOLUTION :(a) `K =W =Wint Fdx =int_(0)^(2)(2.5-x^(2))dx` `=2.33 J ` (b) Maximum kinetic energy of the block is at a point where FORCE changes its direction. or `F=0` at `X=sqrt(2.5)` `=1.58 m` `:. K_(max) =int_(0)^(1.58)(2.5-X^(2))dx` `:. =2.635 J`