Question

5.
A person of mass m is standing on one end of a plank
of mass Mand length L floating in water. The person
moves from one end to another and stops. Work
done by normal force is -

If you don't know then pls don't ans don't write anything worse or you will be reported​

Answer 1

Answer:

work done =F.s=Fscos theta

Here angle between F&s is 90

cos90=0

W=0

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