Advertisements
Advertisements
प्रश्न
Write the formula for work done on a body when the body moves at an angle to the direction of force. Give the meaning of each symbol used.
Advertisements
उत्तर
When the body travels at an angle to the direction of force applied, then the work done will be equal to the product of the displacement and the component of force in the direction of displacement.
So, work done is given by the following formula:
W = (F) (S) cos θ
Where,
(W) - Work done
(F) - Force
(S) - Displacement
(θ) - Angle between force and displacement
APPEARS IN
संबंधित प्रश्न
Power spent by a body depends on the time for which it does work.
Give reasons for the following. No work is done if a man is pushing against a wall.
Fill in the blank with suitable word :
The work done on a body moving in a circular path is __________
A cricket ball is thrown up from the earth's surface. What happens to its P.E.
(a) during the motion
(b) at the highest point?
What do you understand by the term energy? Is energy a scalar or vector? How is the energy possessed by a body measured?
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
