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SL ARORA-Work, Energy and power-EXERCISE
- A pendulum of length 2 m lift at P . When it reaches Q , it losses 10%...
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- A pendulum bob on a 2 m string is displaced 60^(@) from the vertical a...
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- 300J of work is done in slinding a 2 kg block up an inclined plane of ...
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- A body, thrown upward with some velocity reaches the maximum height of...
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- A uniform rope of total length l is at rest on a table with fraction f...
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- The dimensions of K in the equation W=1/2Kx^(2) is
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- The work done by the external agent in stretching a spring of force co...
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- A spring of force constant 800N//m has an extension of 5cm. The work d...
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- Two springs of spring constants 1500N//m and 3000N//m respectively are...
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- When a spring is stretched by 2 cm, it stores 100 J of energy. If it i...
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- A block of mass m initially at rest is dropped from a height h on to a...
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- A 15 gm ball is shot from a spring whose spring has a force constant o...
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- When a spring a stretched through a distance x, it exerts a force give...
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- The SI unit of power is .
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- An electric motor exerts a force of 40 N on a cable and pulls it by a ...
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- A particle moves with a velocity (5hati-3hatj+6hatk) ms ^(-1) under t...
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- A car of mass 1000kg accelerates uniformly from rest to a velocity of ...
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- A constant force F is pushing a 5 kg mass on a horizontal surface at a...
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- A car of mass m is driven with acceleration a along a straight level r...
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- Power applied to a particle varices with time as P =(3t^(2)-2t + 1) wa...
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