Work, Energy and Power

Related Questions

• When a 1.0kg mass hangs attached to a spring of length 50 cm, the spring stretches by 2 cm. The mass is pulled down until the length of the spring becomes 60 cm. What is the amount of elastic energy stored in the spring in this condition, if g = 10 m/s2

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• A pump motor is used to deliver water at a certain rate from a given pipe. To obtain twice as much water from the same pipe in the same time, power of the motor has to be increased to

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• A cord is used to lower vertically a block of mass M by a distance d with constant downward acceleration $\frac{g}{4}$. Work done by the cord on the block is

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• A block of mass m initially at rest is dropped from a height h on to a spring of force constant k. the maximum compression in the spring is x then

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• Which of the following is not an example of perfectly inelastic collision

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