Friday, July 1, 2011

Work,Energy and Power

3) A man cycles up a hill of slope 1 in 20 with a velocity 6.4Km/h along the hill. The weight of the cycle and the cyclist is 98Kgwt.What is the horse power developed(Neglect Friction)

4) The bob of a pendulum is released from horizontal position A. If the length of the pendulum is 2.5m, what is the speed with which the bob reaches the lowermost point B, given that it dissipates 5% of its initial energy against air resistance.


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