Question

A man of mass M stands at one end of a plank of length L of mass m that rests on a smooth horizontal surface. If the man walks to the other end of the plank, the plank displaces by:

Answer 1

Answer:

Let distance moved by the planck be x, then wrt ground the man will move by a distance L−x

Now the net displacement of the centre of mass will be zero in ground frame

M(L−x)=M∗x/3

x=3∗L/4

(L−x)=L/4

Answer 2

hi

here's ur answer !!

ANSWER

Let distance moved by the planck be x, then wrt ground the man will move by a distance L−x

Now the net displacement of the centre of mass will be zero in ground frame

M(L−x)=M∗x/3

x=3∗L/4

(L−x)=L/4

hope it helps you

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