Question

1. What is force? Does it always result in work being done? Explain with
the help of an example.
2. How will you classify the different types of motion shown by a planet
in the Universe?
3. Discuss the difference between motion of a heliconter and the motion

Answer 1

Answer:

pull or pull something is called force

Yes, if force is acting on a body work done can be zero. When an object is at rest and no external force except gravity is acting on it in this case the work that would be zero as the force acting on it is perpendicular.For example, When an object is at rest and no external force except gravity is acting on it in this case the work that would be zero as the force acting on it is perpendicular. Therefore the displacement is zero and if displacement is zero work done would be zero.We know that,The work doneW=fsSuppose that displacement is zero then, W=f×0 W=0