Advertisements
Advertisements
Question
The S.I. unit of energy is .............
Solution
The S.I. unit of energy is joule.
APPEARS IN
RELATED QUESTIONS
Define 1 J of work.
Define 1 joule of energy.
When is work said to be done by a force?
What is the condition for a force to do work on a body?
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
A car is being driven by a force of 2.5 ✕ 1010 N. Travelling at a constant speed of 5 m/s, it takes 2 minutes to reach a certain place. Calculate the work done.
Why is the work done on an object moving with uniform circular motion zero?
The work done on an object does not depend on ______.
What is the relationship between Nm and dyne cm?
Explain the difference between a uniform linear motion and a uniform circular motion.
Is work done a scalar or a vector physical quantity?
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
Define force. Is force a scalar or a vector quantity?
A ______ should act on an object.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
An engine is pulling a train.
Force acting on a particle moving in a straight line varies with the velocity of the particle v as F = `K/v`, where K is a constant. The work done by this force in time t is
