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baherus [9]
3 years ago
14

If you lift two loads up one story, how much work do you do compared to lifting just one load up one story?

Physics
1 answer:
Daniel [21]3 years ago
6 0

Answer:a

Explanation:

We have to lift the load two loads up one story, so energy required is

let m be the mass of each load and h is the height of each story

Energy E_1=2\times m\times g\times \h

E_1=2mgh

Here energy gained is the potential energy which depends upon the datum(floor).

For lifting one load up one story

Energy required

E_2=mgh

thus E_2 is half of E_1

So option a is correct                                

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