Advertisements
Advertisements
प्रश्न
State two conditions when no work is done by a force.
Advertisements
उत्तर
Two conditions are:
- No work is said to be done if there is no change in position or no motion even after the application of force. There should be no displacement i.e. S = 0
- When the angle between the displacement and force applied is 90 degrees i.e the force applied is perpendicular to the displacement. The displacement is NORMAL to the direction of FORCE i.e. –θ = 90°
APPEARS IN
संबंधित प्रश्न
What are the two kinds of mechanical energy?
When is work said to be done by a force?
Fill in the blank with suitable word :
Work is measured as a product of __________ and __________
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.
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
The velocity of a car increases from 54 km/hr to 72 km/hr. How much is the work done if the mass of the car is 1500 kg?
On what factors does the work done by a force depend?
Fill in the boxe to show the corresponding energy transformation.
