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प्रश्न
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उत्तर
Given, loadm = 500kg; height h = 5m; g = 10ms²
W = mgh = 500 x 10 x 5 = 25000 J = 25kJ
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संबंधित प्रश्न
Define the term energy.
Fill in the blank with suitable word :
1 joule is the work done when a force of 1 __________ moves an object through a distance of one __________ in the direction of __________.
Explain by an example that a body may possess energy even when it is not in motion.
A boy tries to push a truck parked on the roadside. The truck does not move at all. Another boy pushes a bicycle. The bicycle moves through a certain distance. In which case was the work done more : on the trick or on the bicycle? Give a reason to support your answer.
What is the relationship between Nm and dyne cm?
A boy of mass m climbs up a staircase of vertical height h.
- What is the work done by the boy against the force of gravity?
- What would have been the work done if he uses a lift in climbing the same vertical height?
In the following case write yes, if the work is being done and no if no work is being done.
A boy climbing up a staircase.
A man climbs a slope and another walks same distance on level road. Which of the two expends more energy and why?
