Question

Tina used 500 N of force to move a desk. The desk weighed 300 N, and she

moved it 1.5 meters. How do you calculate the work done by Tina?
A. Multiply 300 by 1.5.
B. Add 500 to 300.
O
C. Multiply 500 by 1.5.
D. Divide 300 by 1.5.

Answer 1

The correct answer is - C. Multiply 500 by 1.5.

Step-by-step explanation:

Given:

Force to move a desk = 500 N

weight of desk = 300 N

displacement = 1.5 meters

work done by Tine = ?

Formula:

work done (W) = F*d

where F is the force applied on the desk and d is the displacement of the desk.

Solution:

As the displacement is perpendicular to the weight of the desk, therefore, the work done by weight is zero. The work done to the displacement of the desk would be =

W = F*d

= 500*1.5

= 750 J

Thus, the correct answer would be option C.