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September 18, 2019

Solution of Physics Numericals for class 9 (set 1 Q15)


Problem statement

A force causes an acceleration of 10 m/s^2 in a body of mass 500 g. What acceleration would be caused by the same force in a body of mass 5 kg.

Solution

Case 1
mass = m=500 g = 0.5 kg

Acceleration = a =10 m/s^2

Force = ma = 0.5 . 10 = 5 N

This force value will be used as input parameter in the next case.


Case 2

Mass = m=5 kg

Force = F=5 N

And the acceleration = a (to be found out)
F = ma
=> a = F /m = 5/5 m/s^2 = 1 m/s^2

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