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प्रश्न
In the following case write yes, if the work is being done and no if no work is being done.
A man trying to push a wall.
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उत्तर
No.
संबंधित प्रश्न
When a body is placed on a table top, it exerts a force equal to its weight downwards on the table top but does not move or fall
1) Name the force exerted by the table top
2) What is the direction of the force?
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?
State the condition when the work done by a force is positive. Explain with the help of examples.
How is kilowatt hour related to joule?
State the principle of moments.
What do you mean by uniform circular motion?
State and define the unit of force in the S.I. system.
Justify the statement. “Power can be expressed as the product of force and velocity.”
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
