Advertisements
Advertisements
Question
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
Advertisements
Solution
The work done on a body moving in a circular path is zero.
RELATED QUESTIONS
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?

State two conditions when no work is done by a force.
.A man raises a box of mass 50kg to a height of 2m in 20s, while another man raises the same box to the same height in 50s. Compare:
(i) the work done, and
(ii) the power developed by them.
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
A boy throws a rubber ball vertically upwards. What type of work, positive or negative, is done : by the force applied by the boy?
(a) by the force applied by the boy?
(b) by the gravitational force of earth?
When do we say that work is done? Write the formula for the work done by a body in moving up against gravity. Give the meaning of each symbol which occurs in it.
What should be the angle between the direction of force and the direction of motion of a body so that the work done is zero?
Choose one or more correct alternatives.
For work to be performed, energy must be ______.
- transferred from one place to another
- concentrated
- transformed from one type to another
- destroyed
The work done on an object does not depend on ______.
Why does a spanner have a long handle?
Explain the difference between a uniform linear motion and a uniform circular motion.
State the energy changes which take place when A stone dropped from the top of a cliff reaches the ground after some time.
In the following case write yes, if the work is being done and no if no work is being done.
A coolie standing with a heavy load on his head
Is power a scalar or a vector quantity?
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
What is the difference between renewable and non-renewable resources?
How long should an electric motor, of power 2 H.P. operate, so as to pump 5 m3 of water from a depth of 15m. [Take g = 10 N kg−1]
