Question

What is the gravitational potential energy of a 0.15 kg ball resting at the edge of a roof that is 40 m above the ground?​

Answer 1

Answer:

58.8 J

Explanation:

$\underline{\bigstar\:\textsf{Given:}}$

• Mass (m) = 0.15 kg
• Height (h) = 40 m

$\underline{\bigstar\:\textsf{To\:find:}}$

• Gravitational potential energy = ?

$\underline{\bigstar\:\textsf{Solution:}}$

We know, $\blue{\tt{P.E\:=\:m\:×\:g\:×\:h}}$

Here, we know mass, height, we can take acceleration due to gravity 'g' as 9.8 m/s².

$\implies$ P.E = 0.15 × 9.8 × 40

$\implies\:\sf{P.E\:=\:\dfrac{0.15\:×\:98\:×\:40}{10}}$

$\implies$ P.E = 58.8 Joules

$\large\implies\underline{\boxed{\sf\pink{Potential\:energy\:is\:58.8\:J}}}$

Answer 2

Answer:

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