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प्रश्न
Complete the following sentences:
1 H.P. = ........ W.
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उत्तर
1 H.P. = 746 W.
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अध्याय 1: Force, Work, Energy and Power - 1.4 Graded Assignment [पृष्ठ ४२]
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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?
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Give two examples of work done.
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An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
Calculate the amount of work done by a child carrying a bag of 20 kg when he moves a distance of 40 m in
(a) Vertical direction, and
(b) Horizontal direction
Find the kinetic energy of a car of mass 1000 kg traveling at 72 km/h.
A lead bullet moving at 70 ms-1 is brought to rest on hitting a target. If 80% of its energy is converted into heat energy, find the rise in temperature (Sp. Heat cap. Of lead is 140 J/kgK).
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