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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
- Work done by centripetal force is zero . (T or F)
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- A coolie moves on a horizontal platform with luggage on his head. The ...
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- Define work. Write its formula. What is the SI unit of work? Is it a s...
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- Give three situations in which a force produces displacement but still...
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- A horizontal force acts on a body placed on a smooth horizontal table ...
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- A horizontal force of 20 N is required to keep a body moving in a hori...
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- Find the work done in lifting a 50 kg bucket a water through a vertic...
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- Does kinetic energy of a body depend on the direction of motion of the...
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- When you are climbing stairs, work done by the weight is positive. (T ...
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- The ratio S.I unit to C.G.S. unit of work is .
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- Can every force do work?
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- When work is done on a body then kinetic energy of the body. (increase...
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- A book falls freely from the table top. Is work done by some force dur...
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- A boy sitting in a moving car possesses kinetic energy.
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- If momentum of a body is doubled, the kinetic energy becomes times.
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- Is energy a scalar or a vector quantity? Why?
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- What are the various forms of energy? Give some examples of each.
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- Define Kinetic energy. Give one example.
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- A boy of mass 18 kg is running with a speed of 12 km/h. Find the kinet...
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- Given that the kinetic energy of an object is 100 J. If the mass of ob...
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