Question

Two students move a box to the left. One student pushes with a force of 100 N to the left, and the other student pulls with a force of 85 N to the left. They move the box 20 m in 7 s. What is the total amount of work done on the box by the students?

Answer 1

Resultant Force= F1 - F2

F1= 100N

F2= 85N

Resultant Force= 100N - 85N

R.F = 15N

Workdone= Force x Displacement

Force = 15N

Displacement = 20m

= 15N X 20m

=300Nm or Joules