Skip to content
Philoid
Browse Saved
Back to chapter
Physics
11. Work and Energy
Home · Class 9 · Physics · NCERT - Science · 11. Work and Energy
Prev
Next
Q2 of 33 Page 149

Write an expression for the work done when a force is acting on an object in the direction of its displacement?

When a force F displaces a body through a distance s in the direction of the applied force, then the work done W is given by the expression:

Work done = Force × Displacement


W = F × s


More from this chapter

All 33 →
1

A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see Figure below). Let us take it that the force acts on the object through the displacement. What is the work done is this case?

1

When do we say that work is done?

3

Define 1 J of work.

4

A pair of bullocks exerts a force of 140 N in a plough. The field being ploughed is 15 m long. How much work is done in ploughing the length of the field?

Questions · 33
11. Work and Energy
1 1 2 3 4 1 2 3 1 2 3 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
Back to chapter
About Contact Privacy Terms
Philoid · 2026
  • Home
  • Search
  • Browse
  • Quiz
  • Saved