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प्रश्न
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उत्तर
The SI unit of centripetal force is newton (N).
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संबंधित प्रश्न
How is work done by a force measured when the force is in the direction of displacement?
When does a force do work?
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
An ox can apply a maximum force of 1000 N. It is taking part in a cart race and is able to pull the cart at a constant speed of 30 ms-1 while making its best effort. Calculate the power developed by the ox.
Name the quality which is measured in eV
State the principle of moments.
A pump is used to lift 600 kg of water from a depth of 75 m in 10s. Calculate:
- The work done by the pump,
- the power at which the pump works, and
- The power rating of the pump if its efficiency is 40%. (Take g = 10m s-2).
`["Hint" : "Efficiency" = "useful power"/"power input"]`
It takes 20 s for a person A of mass 50 kg to climb up the stairs, while another person B of same mass does the same in 15 s. Compare the power developed by the persons A and B.
