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ICSE- WORK ENERGY AND POWER-EXERCISE-2(A) (NUMERICALS)
- A body ,when acted upon by a force of 10 khf , get displaced by 0.5 m....
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- A boy mass 40 kg climbs up the stairs and reaches the roof at a height...
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- A man spend 6-4 KJ energy in displacing a body by 64 m in the directio...
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- A weight lifter lifted a load of 200 kgf to a height of 2.5 m in 5 s. ...
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- A machine raises a laod a 750 N through a height of 16 m in 5 s.Calcul...
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- An electric heater of power kW is used for 10 h.How much energy does i...
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- A water pump raises 50 litres of water through a height of 25 m in 5 ....
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- A pump is used to lift 500 kg of water from a depth of 80 m in 10 s .C...
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- An ox can a maximum force of 1000 N.It is taking part in a cart race a...
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- The power of a motor a is 40 kW .At what speed can the motor raise a l...
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- Rajan exerts a force of 150 N in pulling a cart at a constant speed of...
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- A boy weighing 350 N climbs up 30 steps.each 20 cm high in 1 minute .C...
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- IT takes 20 s for a person A of mass 50 kg to climb up the stairs. Whi...
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- A boy weighing 40 kgf climbs up a stair of 30 steps each 20 cm high in...
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- A man raises a box of mass 50 kg to a height of 2 m 10 s,while another...
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- A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep...
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