Advertisements
Advertisements
प्रश्न
What is the condition for a force to do work on a body?
उत्तर
The necessary condition for force to do work is that the applied force should produce motion in the body in any direction except the direction perpendicular to the force applied.
APPEARS IN
संबंधित प्रश्न
Power spent by a body depends on the time for which it does work.
State two factors on which the work done on a body depends.
Give reasons for the following A teacher moving around in the class is doing work but a child standing and reading a book is not doing any work.
A machine raises a load of 750 N through a height of 16 m in 5 s. calculate:
- energy spent by machine,
- power at which the machine works.
Is work a scalar or a vector quantity?
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
The work done on an object does not depend on ______.
Its moment of a force scalar or a vector quantity?
What is meant by a translational motion? Give one example.
When you move upstairs, do you perform some work?
Define 'joule'.
Define energy and state the unit of energy and the law of conservation of energy.
Give an example
Electrical energy changes of sound energy.
Define Translational motion.
State the amount of work done by an object when it moves in a circular path for one complete rotation. Give a reason to justify your answer.
A force can cause an object to change its ______.
