Advertisements
Advertisements
प्रश्न
A man having a box on his head, climbs up a slope and another man having an identical box walks the same distance on a levelled road.
Who does more work against the force of gravity and why?
Advertisements
उत्तर
Man having a box on his head who climbs up a slope does more work against the force of gravity because he has more potential energy by virtue of his position i.e., height.
As, P.E. = W.D. = F × S
= mg × h
APPEARS IN
संबंधित प्रश्न
Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.
How is kilowatt hour related to joule?
Differentiate between work and power.
Name the quality which is measured in Wh.
State the factors on which moment of force about a point depends.
How much force is applied on a body when 150 J of work is done in displacing the body through a distance of 10 m in the direction of the force?
1 kWh = ______ J.
What happens to the power if the time for doing work is reduced from t second to t/10 second?
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
State the C.G.S. unit of work. How it is related to its S.I. unit?
