Question

If the acceleration due to gravity is 10m/s^2,find out the potential energy of a body whose mass is 4kg and kept at a height of 3m

Answer 1

✹ Given

❒ Acceleration due to gravity = 10 m/s²

❒ Mass of body = 4 kg

❒ Height = 3 m

✹ To find

❍ Potential energy of body.

✹ Solution

Now we have :

⇴ Gravitational acceleration (g) = 10 m/s²

⇴ Mass (M) = 4 kg

⇴ Height (h) = 3 m

We know the formula :

❐ Potential energy (P.E.) = m * g * h

Substituting values,

➜ Potential energy = 4 * 10 * 3

➜ Potential energy = 40 * 3

➜ Potential energy = 120 J

➜ Potential energy = (120/1000) kJ

➜ Potential energy = 0.12 KJ

Therefore, potential energy of body is 120 Joules or 0.12 kilojoules.

Answer 2

$\huge\star\sf\underline\red{Solution:-}$

$\bf\bold\orange{We\:have,}$

• Acceleration due to the gravity (g) = 10 m/s²

• Mass (m) = 1 kg

• Height (h) = 3 m

Formula:-

$\underline\pink{\boxed{\sf{Potential\: Energy = m \times g \times h}}}$

To Find:-

Potential Energy = ?

Step By step:

P.E. = 4 × 10 × 3

$\implies \huge\underline\pink{\boxed{\sf{120\: j}}}$

Thus,

The potential Energy of the body is 120 joules.