Hold your hand out with your elbow at your side and your forearm parallel to the

Question

Hold your hand out with your elbow at your side and your forearm parallel to the ground. You can feel your bicep flexing in order to keep your forearm in equilibrium in this position, working against the force of gravity. To maintain this equilibrium, how does the force that your bicep exerts on the forearm compare with the force of gravity acting on the forearm? a) The force exerted by the bicep is less than the force exerted by gravity b) The force exerted by the bicep is equal to the force exerted by gravity. c) The force exerted by the bicep is greater than the force exerted by gravity.

Explanation / Answer

option a

the force exerted by bicep is always less than force due to gravity because our centre of mass of body will be less than the ground.

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