Question

When Lekshmi is applied a force of 50N on an object it undergoes a displacement of 2m. When Vinitha applied the same force on it under goes a displacement of 3m if so 

(a) Which person done more work? 

(b) Give reason 

(c) Calculate the work done by each person?

Answer 1

(a) Vinitha

(b) Displacement is greater

(c) Work done by Lekshmi

W = Fs = 50N × 2m = 100J

Work done by Vinitha

W = Fs = 50N × 3m = 150J