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संबंधित प्रश्न
A coolie X Carrying a load on his head climbs up a slope and another coolie Y carrying the identical load on his head move the same distance on a frictionless horizontal platform. Who does more work? Explain the reason.
What physical quantity does the electron volt (eV) measure? How is it related to the S.I. unit of that quality?
Name the quality which is measured in eV
What do you mean by a centrifugal force?
1 kWh = ______ J.
A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.
What happens to the power if the time for doing work is reduced from t second to t/10 second?
A coolie carrying a load on his head and moving on a frictionless horizontal platform does no work. Explain the reason why.
A coolie carries a load of 30 kgf through a distance of 500 m in 5 minutes while another coolie B carries the same load through the same distance in 10 minutes. Compare the
(i) work done, and
(ii) power developed. (Take: g = 10md−2)
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person climbs a ladder.
