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A electric motor creates a tension of 45...

A electric motor creates a tension of 4500 N a hoisting cable and reels it at a rate of `2m*s^(-1)` . Calculate the power of the motor.

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9 kW
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CHHAYA PUBLICATION-WORK AND ENERGY-PROBLEM SET -I
  1. The engine of a train has to apply a force of 5000 N to overcome frict...

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  2. A water pump raises water at a rate of 0.50 m^3// min from a depth of ...

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  3. A electric motor creates a tension of 4500 N a hoisting cable and reel...

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  10. A bullet of mass 10 g travels horizontally with a speed of 100 m*s^(-1...

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  11. A ball is dropped from rest from a height of 10 m. if it loses 20% of ...

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  12. A pendulum bob of mass 10^(-2) kg is raised to a height of 5xx 10^(-2)...

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  13. A force of 30 N acts on a body of mass 2.0 kg starting from rest upto ...

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  15. A stone of mass 500 g is tied at one end of a thread . If the stone i...

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