Question

If ball 4 has a mass of 2 kg and it is 5m high, what will be its gravitational potential energy? (g=10 N/kg) *​

Answer 1

Answer:

$\blue{\boxed {\sf 100 \ Joules}}$

Explanation:

Gravitational potential energy can be found using the following formula.

$\bold{E_p=m×g×h}$

where m is the mass, g is the gravitational acceleration, and h is the height.

According to the question,

The mass of the ball is 2 kilograms, its height is 5 meters, and the acceleration due to gravity is 10 Newtons per kilogram.

$\begin{gathered}\mapsto m= 2 \ kg \\ \mapsto h= 5 \ m \\ \mapsto g= 10 \ N/kg\end{gathered}$

Substitute the values into the formula.

$\tt{E_p=(2 \ kg)(10 \ N/kg)(5 \ m)}$

Multiply the first 2 numbers. The kilograms (kg) will cancel out when multiplying.

$\sf{E_p=(20 \ N)(5 \ m)}$

Multiply again.

$\sf{E_p=100 \ N×m}$

•1 Newton meter is equal to 1 Joule

•Therefore, 100 N×m= 100 J

$\therefore{\bold{E_p= 100 \ J}}$

so,The gravitational potential energy of the ball is 100 Joules.