Q9 of 23 Page 117

A man is standing against a wall such that his right shoulder and right leg are in contact with the surface of the wall along with his height. Can he raise his left leg at this position without moving his body away from the wall? Why? Explain.

When the man is standing against the wall such that his right shoulder and right leg are along his height. Then the center of

Gravity is nearly at the belly point. In this situation, he can’t raise his left leg. Because if he raises the left leg, the center of gravity moves. Then he must move his body parts to maintain the center of gravity. Therefore as he raises his left leg he has to move his other body parts. The figure below depicts this.


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