Question

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plz help............its an example...but there ans is not clear... ;-)​

Answer 1

Given:-

Force(F)=5N

Case1:-

Mass=m1

Acceleration(a1)=10m/s²

Case 2:-

Mass=m2

Acceleration(a2)=20m/s²

To find:-

Acceleration of the body for mass m1+m2

Solution:-

Here,we shall be using Newton's second law of motion i.e.----

F=ma

m1=F/a1

m1=5/10

m1=1/2kg

m2=F/a2

m2=5/20

m2=1/4kg

Thus,M=m1+m2

M=1/2+1/4

M=3/4kg

Now,a=F/M

a=5/3/4

a=20/3m/s²

Thus,acceleration when both the masses are tied together is 20/3m/s².