Advertisements
Advertisements
Question
Name the forms of energy which a wound-up watch spring possesses.
Advertisements
Solution
Elastic potential energy is possessed by wound up watch spring
RELATED QUESTIONS
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A sailboat is moving due to wind energy.
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.

An electron emitter must have _____________ work function and ___________ melting point.
No work is done by a force if the body
State two conditions when no work is done by a force.
A bullet of mass 0.5 kg slows down from a speed of 5 m s-1 to that of 3 m s-1. Calculate the change in kinetic energy of the ball.
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
Write the two main conditions are needed for work to be done?
