Question

A man of mass m1 is standing on a platform of mass m2 kept on a smooth horizontal surface the man starts moving on a platform with velocity v are related to the plan for finding equal to 8 your platform

Answer 1

The displacement of platform w.r.t ground is x2=m1d/m1+m2

Explanation:

Correct statement

A man of mass m1 is standing on a platform of mass m2 kept on a smooth horizontal surface. It the man moves a distance d w.r.t., the platform, find the displacement of the platform w.r.t ground.

Here, mass of man =m1

mass of platform =m2

As the surface on which platform is placed is smooth, therefore no external force is acting along the horizontal, i.e.

Faxt.=0, Therefore, a(cm) =0 and υ(cm)= constant

As υ(cm) is zero initially, it would remain zero even after the man moves.

Let x1= displacement of man towards right

x2= displacement of platform towards left

Since

m1x1=m2x2  and x1+x2=d

m2x2/m1+x2=d

x2(m2/m1+1)=d

x2=m1d/m1+m2

The displacement of platform w.r.t ground is x2=m1d/m1+m2

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