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A car of mass 500 kg moves with a consta...

A car of mass 500 kg moves with a constant velocity 72km/hr
(i) along a horizontal path,Coefficient of sliding friction between the road and the wheel is 0.1 . Find the engine power

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The correct Answer is:
9.8 kW
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While lifting a 10 kg block vertically with a constant velocity, it is kept pressed against a wall by a horizontal force of 49 N. Coefficient of friction between the block and the wall is 0.2. Find the upward force.

A car of mass M moves upward with a constant speed v along an inclined road making an angle theta with the horizontal . If mu be the coefficient of friction between the road and the wheel of the car, show that the power of the engine of the car is P=vMg(sin theta +mucos theta) .

A car of mass 500 kg is moving up along an inclined surface of slope 1/(25) at a constant speed of 72 km*h^(-1) . If the coefficient of friction between the road and the car wheel is 0.1 , find the power of the car engine (g= 9.8 m*s^(-2) ).

A car of mass M moves upward with a constant speed v along an.. inclined road making an angle theta with the horizontal. If mu be the coefficient of friction between the road and the wheel of the car, show that the power of the engine of the car is P= vMg(sin theta + mu cos theta ).

A block of mass 0.1 kg is kept pressed onto a wall by applying a horizontal force of 5 N. If the coefficient of friction between the block and the wall is 0.5, find the force of friction on the block.

A pot of mass 1 kg is raised vertically at a constant velocity by holding it firmly with both hands. Coefficient of friction between the hands and the pot is 0.2, what is the force applied by each hand?

A block of mass 0.1 kg is kept pressed against a wall by applying a force of 5 N horizontally on the block. Coefficient of friction between the block and the wall is 0.5. Friction acting on the block is.

CHHAYA PUBLICATION-WORK AND ENERGY-PROBLEM SET -II
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