Numerical Problem No. 3.2 (Dynamics) Physics SSC - I (Class 9)

The weight of a body is 147 N. What is its mass? (Take the value of g as 10 ms⁻² ) Ans. (14.7 kg)

Given:  

Weight of the body = W = 20 N

Gravitational Acceleration = g = 10 m s⁻²

To Find:

Mass of the body = m = ? 

Solution:  

The formula for weight is 

W = mg

or

m = `\frac{W}{g}`

by putting values

m = `\frac{147 N}{10 m s⁻²}`

m = 14.7 kg

So, the mass of the body is 14.7 kg

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