Question

Calculate the gravitation force between a man weighing 80 kg and a boy weighing 60 kg standing 2 m apart

Answer 1

Answer:-

8.004×10⁻⁸ N

Explanation:-

According to Newton's Universal Law of Gravitation, we know that:-

=> F = GMm/r²

Where:-

• F is the magnitude of gravitational force.

• G is Universal Gravitational Constant

• M is mass of the 1st body

• m is mass of the 2nd body

• r is the distance between the bodies

→ Value of G = 6.67×10⁻¹¹ Nm²/kg²

=> F = 6.67×10⁻¹¹×80×60/(2)²

=> F = 6.67×10⁻¹¹×20×60

=> F = 8004×10⁻¹¹

=> F = 8.004×10⁻⁸ N

Thus, gravitational force between the man and the boy is 8.004×10⁻⁸ N.

Some Extra Information:-

• The gravitational force of attraction

does not change in the medium

between point masses.

• It is the weakest force in nature.

• It is always attractive in nature.