A hand pushes on a flexible piece of stretched fabric with a force of 5.0 N. The

Question

A hand pushes on a flexible piece of stretched fabric with a force of 5.0 N. The fabric assembly is fixed and does not move. What is the direction and magnitude of the normal force exerted back on the hand by the sheet? Is the normal force larger, smaller, the same, or zero? What does the stretching of the fabric have to do with this? Suppose the hand pushes in the same way on a wall. What is the direction and magnitude of the normal force exerted back on the hand by the wall? Does the wall stretch noticeably? What causes the wall to be able to exert a force on the hand? How does the wall "know" what force to exert back on the hand?

Explanation / Answer

a)

The normal foce is zero

b)the strech at different points casues normal force in dffrent directions resulting the net normal force as zero

c)5.0 N

d) No the strech on the wall is not noticable

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