When you support yourself with two arms, the tension in each arm is half of the tension you experience when you support your weight with only one arm.
The tension in your arm is directly proportional to the weight of your body.
T = W = mg
When you support your weight with your two arms;
[tex]Tension \ in \ each \ arm = \frac{Total \ weight \ of \ your \ body}{2}[/tex]
When you support the weight of your body with one arm,
[tex]Tension \ in \ the \ one \ arm = Total \ weight \ of \ your \ body[/tex]
Thus, when you support yourself with two arms, the tension in each arm is half of the tension you experience when you support your weight with only one arm.
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