Question

A body of mass 1kg has a potential energy of 1 joule relative to the ground when it is at a height of

Answer 1

solution: potential energy=1j

mass = 1KG

P.E= mgh

1=(1)(10)h

1=10h

h=1/10m

Hence,height is 1/10m

Answer 2

Height of the body from ground is $\dfrac{1}{10}\ m.$

Explanation:

To find:

Height from ground = h .

Given:

Potential energy of body at h is = 1 J.

Mass of object = 1 kg.

We know ,

Potential energy of an object of mass m and height h is given by , $P=m\times g\times h$. ( here h is distance of object from the ground)

( $g=10\ m/s^2 \ .$)

Putting value of P and m in above equation ,

We get,

$1=1\times 10\times h$    

$h=\dfrac{1}{10}\ m.$

Learn more:

Potential energy

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