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An electric motor exerts a force of 40 N on a cable and pulls it by a distance of 30 m in one minute. The power supplied by the motor (in Watts) is
An electric motor creates a tension of 4500 newton in a hoisting cable and reels it in at the rate of 2 m/sec. What is the power of electric motor
A weight lifter lifts 300 kg from the ground to a height of 2 meter in 3 second. The average power generated by him is
Power of a water pump is 2 kW. If $g = 10\,m/{\sec ^2}$, the amount of water it can raise in one minute to a height of 10 m is
An engine develops 10 kW of power. How much time will it take to lift a mass of 200 kg to a height of 40 m. $(g = 10\,m/{\sec ^2})$
A car of mass ‘m’ is driven with acceleration ‘a’ along a straight level road against a constant external resistive force ‘R’. When the velocity of the car is ‘V’, the rate at which the engine of the car is doing work will be
The average power required to lift a 100 kg mass through a height of 50 metres in approximately 50 seconds would be
From a waterfall, water is falling down at the rate of 100 kg/s on the blades of turbine. If the height of the fall is 100 m, then the power delivered to the turbine is approximately equal to
The power of a pump, which can pump 200kg of water to a height of 200m in 10sec is $(g = 10m/{s^2})$
A 10 H.P. motor pumps out water from a well of depth 20m and fills a water tank of volume 22380 litres at a height of 10m from the ground. the running time of the motor to fill the empty water tank is $(g = 10m{s^{ - 2}}$)

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