Question

A box of mass 3kg is lifted 1.5m onto a shelf. Calculate the change in its gravitational potential energy. The gravitational field strength is 10N/kg.

Answer 1

Answer:

The change in gravitational potential energy is 45 J.

Explanation:

Given that,

Mass = 3 kg

Distance = 1.5 m

Gravitational field strength = 10 N/kg

We need to calculate the change in gravitational potential energy

Using formula of  gravitational potential energy

$Change\ in\ gravitational\ potential\ energy =gravitational\ field\ strength\times mass\times distance$

Put the value into the formula

$Change\ in\ gravitational\ potential\ energy =10\times3\times1.5$

$Change\ in\ gravitational\ potential\ energy =45\ J$

Hence, The change in gravitational potential energy is 45 J.