Question

a body is thrown up with a kinetic energy of 10 joules.if I attains a maximum height of 5 metres find the mass of the body​

Answer 1

Answer:-

The mass of the body is

$\pink{\bigstar}$ 0.2 kg or 200g

• Given:-

K.E of the body = 10 J

Height attained by the body = 5 metres

• To Find:-

Mass of the body = ?

• Solution:-

Kinetic Energy = Potential energy at that height [as it reaches its maximum height]

* Kinetic energy is equal to Potential energy when the body reaches its maximum height.

Hence,

$\boxed{\sf\red{K.E = mgh}}$

→ 10 = m × 10 × 5

→ 10 = 50 × m

→ m = $\sf{\dfrac{10}{50}}$

→ m = 0.2 kg

Therefore, the mass of the body is 0.2 kg or 200g.