Factors Affecting Work Done
Trending Questions
A boy carries a load of 50 kg on his head and walk on a level road up to 100 m what is the work done by him
Why work done is a scalar quantity rather it's formula is force * distance but force is vector quantiy?
If two people are pulling a box in the same direction with 85 N and 65 N force. Find the net work done by the forces if the net displacement of the box is 18m.
2700 J
2800 J
1900 J
1250 J
A force F is applied to the body and body displaces in the direction of force applied. If the force applied to the body is doubled, the work done will be
doubled
halved
tripled
four times
If two teams play tug of war and both pull with equal force then
work is said to be done
no work is done
double work is done
none of these
Vijay and Gopal are pulling a block with 22 N force and 10 N force respectively in opposite directions. If Vijay pulls the block by a total distance of 6.5 m towards himself, find the net work done by the forces acting on the block.
12 J
90 J
78 J
85 J
Ankit is pulling a block with 22 N force and Gopal is pulling it with 10 N force in opposite direction. Ankit is able to pull the block to a total distance of 6.5 m. Find net work done.
12 J
90 J
85 J
78 J
- 86 J
- 78 J
- 90 J
- 96 J
Vijay and Gopal are pulling a block with 22 N force and 10 N force respectively in opposite directions. If Vijay pulls the block by a total distance of 6.5 m towards himself, find the net work done by the forces acting on the block.
12 J
90 J
85 J
78 J
- potential, kinetic
- potential, heat
- kinetic, potential
- kinetic, heat
Which of the following factors does not influence the amount of work done?
Magnitude of displacement of the object
Direction of displacement of the object
Time taken to do the work
Force applied for executing the work
- False
- True
Work done in raising a box depends on:
How fast it is raised
The strength of the man
The height by which it is raised
- None of the above
A body is moving in the direction opposite to the direction of force acting on it. The work done ___.
is negative
is positive
is zero
depends on the velocity
- heat
- kinetic
- potential
- electrical
Observe the given figure carefully and write the energy transformation taking place here if any.
A boy was playing with a spongy ball, compressing and releasing it. What will be the work done by the boy on the ball and the ball on the boy respectively at the time of compressing?
Positive, Negative
Negative, Positive
Positive, Positive
Negative, Negative
Work done by a person on a body doesn't depend on:
Force
Time require to displace the body
Displacement
Depends on all
A body is moving in the direction opposite to the direction of force acting on it. The work done ___.