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प्रश्न
A boy pulls a box up to 10 m with a force of 5 kgf. Calculate the work done by him.
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उत्तर
Given, force = 5kgf = 5 kgf x 10 ms-2= 50N
displacement = 10m
Work done = force x displacement = 50 x 10 = 500J
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संबंधित प्रश्न
Write the expression for work done by a force.
A body, when acted upon by a force of 10 kgf, moves to a distance 0.5 m in the direction of force. Find the work done by the force. Take 1 kgf = 10 N.
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
Fill in the blank with suitable word :
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Give two examples of couple action in our daily life.
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
Fill in the boxe to show the corresponding energy transformation.
Give an example
Chemical energy changes to heat energy.
State whether work is done or not, by writing yes or no, in the following case:
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