Question

A girl is running along a circular path with a uniform speed. How much work is done by the girl?

August 4, 2024

Answer

Zero

💡 Some Related Questions

The diagram below shows a pendulum which was released from position A. (a) What form(s) of energy did the pendulum have at (i) A? (ii) B? (iii) C? (b) Eventually the pendulum would stop moving. Explain what has happened to the initial energy of the pendulum.

Is it possible that an object is in the state of accelerated motion due to external force acting on it, but no work is being done by the force? Explain with example.

Can any object have momentum even if its mechanical energy is zero? Explain

Can any object have mechanical energy even if its momentum is zero? Explain.

Anil lives in a village and his school is 8 km away from his home. His father suggests buying a motor cycle to go to school. Anil opposes the idea and opts for a bicycle instead. (𝒊) Write the energy transformation taking place while Anil rides his bicycle. (𝒊𝒊) Justify the stand taken by Anil in your own words. (𝒊𝒊𝒊) How can he convince his friends to do the same?

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Prachi and Kanchi were observing a building having two different staircase. One slanting and other vertically spiral. Prachi was of the opinion that a person using slanting staircase will be doing more work against gravity but Kanchi thought otherwise. They started arguing. Sanchi, their friend, explained and gave entirely different view and pacified them. (𝒊) What according to you was the explanation given by Sanchi? (𝒊𝒊) What appreciable values do you see in Sanchi?

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