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प्रश्न
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उत्तर
Horse power is the unit of power. The horsepower used for electrical machines is defined as exactly 746 watt.
Classically, a horse exerting 1 H.P. can raise 330 pounds of coal 100 feet in a minutes, or 33 pounds of coal 1,000 feet in one minute, or, 1,000 pounds 33 feet in one minute.
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संबंधित प्रश्न
A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force (see the given figure). Let us take it that the force acts on the object through the displacement. What is the work done in this case?
Write an expression for the work done when a force is acting on an object in the direction of its displacement.
How is work related to energy?
Is work a scalar or a vector quantity?
Give one example each in which a force does (a) positive work (b) negative work, and (c) zero work.
If the work done by a force in moving an object through a distance of 20 cm is 24.2 J, what is the magnitude of the force?
Name the type of energy possessed by a
(i) stretched catapult (ii) hot iron
(iii) wound up clock
Give an example
Chemical energy changes to electrical energy.
If a ball is dropped on the sloping roof of a house, it acquires ______ and falls on the ground. That is the transformation of ______ energy into ______ energy takes place.
(kinetic, potential, motion)
