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dangina [55]
3 years ago
7

A person standing for a long time gets tired when he does not appear to do any work .why?​

Physics
1 answer:
Keith_Richards [23]3 years ago
6 0

Explanation:

A person standing still for a long time feels tired because the force of gravity acts on our body and puts stress on our muscles. so our muscles need energy to do work and keep body balanced and help to stand upright.

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4 0
3 years ago
. A cylinder of mass M and radius R is released from rest at the top of an inclined plane. The cylinder rolls without slipping d
polet [3.4K]

For a cylinder of mass M and radius R is released from rest at the top of an inclined plane, the expression is mathematically given as

L=MR * √{gh/3}

<h3>What is the expression for the angular momentum of the cylinder about its center of mass when it has rolled a vertical distance h.?</h3>

Generally, the equation for the angular velocity  is mathematically given as

w=V/R

Therefore

w=\frac{\sqrt{ugh/3}}{R}

In conclusion, at instance of IW, the angular velocity

L=MR^2/2 * 2\sqrt{gh/3}/R

L=MR * √{gh/3}

Read more about momentum

brainly.com/question/7538238

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