What is the difference between work done on a body by a force and work done by a body?

  • A
    Work done on a body increases its energy,while work done by a body decreases its energy.
  • B
    Work done on a body decreases its energy,while work done by a body increases its energy.
  • C
    Both represent the same physical process.
  • D
    Work done on a body is always zero,while work done by a body is always positive.

Explore More

Similar Questions

State the principle of conservation of mechanical energy for a conservative force.

Difficult
View Solution

Brakes stop a train in a distance $x$. If the braking force is reduced to one-fourth of its original value,what distance will the train travel before coming to a stop?

$A$ particle of mass $20\,g$ is released with an initial velocity $5\,m/s$ along the curve from the point $A,$ as shown in the figure. The point $A$ is at height $h = 10\,m$ from point $B.$ The particle slides along the frictionless surface. When the particle reaches point $B,$ its angular momentum about $O$ will be ......... $kg \cdot m^2/s$. [Take $g = 10\,m/s^2$]

The displacement-time graph of a particle moving in a straight line is as shown in the figure. Select the correct alternative.

Work equal to $25\,J$ is done on a mass of $2\,kg$ to set it in motion. If the whole of it is used to increase the kinetic energy,then the velocity acquired by the mass is ............ $m/s$.

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo