Advertisements
Advertisements
Question
Solution
Potential energy of a body depends upon:
(i) Mass of the body
(ii) Acceleration due to gravity
(iii) Height of the body
APPEARS IN
RELATED QUESTIONS
When do we say that work is done?
What is the work done by the moon when it revolves around the earth?
The S.I. unit of energy is .............
In which of the following cases, is work being done?
(i) A man pushing a wall.
(ii) a coolie standing with a load of 12 kgf on his head.
(iii) A boy climbing up a staircase.
The work done by a force acting obliquely is given by the formula : W = F cos θ ✕ s. What will happen to the work done if angle θ between the direction of force and motion of the body is increased gradually? Will it increase, decrease or remain constant.
A girl weighing 400 N climbs a vertical ladder. If the value of g be 10 m s−2, the work by her after climbing 2 m will be :
The work done on an object does not depend on ______.
Is the motion of moon around the earth in circular path an accelerated motion?
What is the SI unit of work?
State the energy changes which take place when A toy car with a wound spring moves on ground.
Give an example
Electrical energy changes of sound energy.
How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s-1 to catch the bus?
A coolie, with a load of 30 kg on his head, walks on the platform. If he walks a distance of 60 m, what is the work done by him?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A green plant is carrying out photosynthesis.
