Question

A stone resting on the ground has a gravitational force of 45 N acting on it. What is the weight of the stone? What is its mass? (g = 10 m/s2).​

Answer 1

Answer:

F=mg  =>m=F/g  =>m=45/10   =>m=4.5 kg

Explanation:

Answer 2

Given:

• Gravitational force acting on the resting stone on ground, F = 45 N
• Acceleration due to gravity to be taken, g = 10 m/s²

To find:

• Weight of stone =?
• Mass of stone, m =?

Formula required:

• Formula to calculate Gravitational force

         F = m g

[ Where F is Gravitational force acting on the body, m is mass of body and g is the acceleration due to gravity ]

Solution:

Since, Weight is known as the Gravitational force acting on a body.

Therefore,

• Weight of stone = Gravitational force acting on stone = 45 Newton.

Now,

Using formula to calculate Gravitational force

→ F = m g

→ 45 = m ( 10 )

→ m = 45 / 10

→ m = 4.5 kg

Therefore,

• Mass of stone = 4.5 kilograms.