Numerical Problem No. 3.1 (Dynamics) Physics SSC - I (Class 9)

A force of 20 N moves a body with an acceleration of 2 ms⁻². What is its mass? Ans. (10 kg)

Given:  

Force = F = 20 N

Acceleration = a = 2 m s⁻²

To Find:

Mass of the body = m = ? 

Solution:  

According to Newton's 2nd Law

F = ma

or

m = `\frac{F}{a}`

by putting values

m = `\frac{20 N}{2 m s⁻²}`

m = 10 kg

So, the mass of the body is 10 kg

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