A 49 Newton rock is lifted 2 meters in 5 seconds.
How much work is done?
What power is used?

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madisong57 madisong57

03-03-2016
Physics

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A 49 Newton rock is lifted 2 meters in 5 seconds.
How much work is done?
What power is used?

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olemakpadu olemakpadu · Answer 1 · 2016-03-03T07:43:28+01:00

olemakpadu olemakpadu

03-03-2016

Work done is potential energy = mgh

mg = weight of the stone = 49 N

h = 5 m

Work done = (mg)h = 49 * 5 = 245 Joules.

Power = Work done / Time taken

= 245 / 5 = 49 Watts.

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A 49 Newton rock is lifted 2 meters in 5 seconds. How much work is done? What power is used?

Respuesta :

Otras preguntas

A 49 Newton rock is lifted 2 meters in 5 seconds.
How much work is done?
What power is used?