A truck draws a tractor of mass 1000 kg at a steady rate of 20 m/s on a level road. The tension in the coupling is 2000 N. Calculate the power spent on the tractor?

A truck of weight 2x 10⁵N can move up a road

having a slope of 1 in 50 with a speed of 8 m/s. The resistive force of road is one twenty-fifth of the weight of truck. What is power of truck?

Solution

Given,
Mass of the tractor, m = 1000 kg
Speed of the tractor, v = 20 m/s
Tension in coupling = Force applied
Force, F = 2000 N
Using the formula for power, we have
Power spent on the tractor, P = 2000 x 200 = 40000 Watt = 40 kW

Some More Questions From Work, Energy and Power Chapter

Does the body at rest possess energy?

By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

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Work, Energy And Power

Some More Questions From Work, Energy and Power Chapter

Does the body at rest possess energy?

By eating two apples, a person starts pushing the wall of room. If food value of apple is 100 calories per apple, how much work he will do in pushing the wall in one hour?

A man is rowing upstream and is at rest w.r.t. shore. Is he doing work w.r.t. shore?

Is frictional force conservative?

What is the work done by gravitational force in taking the mass m with constant velocity through height h?

A mass is tied with a string and whirled in horizontal circle. What is the work done by tension force?

Does the work done by force depend upon the velocity at that instant?

What is the work done by man against gravity when he is carrying a load on his head and walking on the horizontal road?

Are all central forces conservative?

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