Question

a cement bag weight 50 kg to what height should be raised so that it's potential energy may be 9800j(g=9.8)

Answer 1

P.E=mgh
m=50kg
g=9.8m/s^2
h=?
P.E=9800j
i.e.
9800=50×9.8×h
h=9800/50×9.8
h=20m

Hope it helps

Answer 2

The height at which the object is taken is 20 meters.

Explanation:

Given that,

Mass of the cement bag, m = 50 kg

When it is raised to some height its potential energy will be, P = 9800 J

To find,

Height at which the object is taken.

Solution,

The energy possessed by an object due to its height is called its potential energy. It is given by :

$P=mgh$

$9800=50\times 9.8\times h$

h = 20 meters

So, the height at which the object is taken is 20 meters.

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Potential energy

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