A body of mass 10 kg is moved parallel to the ground, through a distance of 2 m. The work done against gravitational force is _.
Correct answer: A. Zero
- A. Zero
- B. 196 J
- C. -196 J
- D. 48 J
Explanation
Option A is correct since gravitational force only works perpendicular to the ground, so no work is done against gravitational force. Options B, C, and D are incorrect since no work can be done against gravitational force.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Work
Work is done when a force produces displacement, with its value determined by the component of force along the displacement. The topic covers positive, negative and zero work, work by variable forces from force-displacement graphs, and the connection between net work and change in kinetic energy.
Practise Work and Energy
748 free Work and Energy MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Work questions
A body moves a distance of 10 m along a straight line under the action of 5 N force. If work done is 25 J, then angle between the force and direction of motion of the body will be _.
Work done by friction _.
A variable force F = x is applied what will be the work done in moving the particle from X= 0 to 1
A body of mass 10 kg is moved parallel to the ground, through a distance of 2 m. The work done against the gravitational force is _.
When a spring is stretched, how much work is done by the stretching force?
An object is displaced from point A (0, 1, 1) m to point B (1, 4, 3) m under a constant force F = (i + 2j + 3k). Find the work done by this force in this process: