Question

find the work done in lifting a laptop of mass 10 kgs and keeping it at a height of 1.2 m

Answer 1

Work done = Potential Energy = mass ×gravity ×height = mgh = 10×10×1.2 = 120 joules.

(you may take gravitation quotient as 9.8 but I've taken 10 for convenience)

Answer 2

W=F * S

M*A *S

10*10*1.2=120 joules