derive formula f=ma
Answers
Answer:
Let us derive the relation of force F = ma from Newton’s second law:
According to the Newton’s 2nd Law of motion, the rate of change of linear momentum of a body is directly proportional to the applied external force and in the direction of force.
It means that the linear momentum will change faster when a bigger force is applied.
Consider a body of mass ‘m’ moving with velocity v.
The linear momentum of a body is given by:
p = mv
Now According to Newton’s 2nd Law of Motion:
Force is directly proportional to rate of change of momnetum, that is
F α dp/dt
F = k dp/dt
F = k d(mv)/dt
F = k md(v)/dt
F = k ma
Experimentally k =1
F = k ma
Which is the required equation of force.
Answer:
f = ma
Explanation:
by 2nd law of motion,
f=dp/dt
f= mdv/dt (as p=mv)
f= ma (as a = dv/dt)
f= ma
HENCE PROVED
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