Physics, 08.11.2019 22:31 avavackity
In which of the following cases is the torque about the shoulder due to the weight of the arm the greatest? case 1: a person holds her arm at an angle of 30 above the horizontal (hand is higher than shoulder). case 2: a person holds her amr straight out parallel to the ground. case 3: a person holds her arm at an angle of 30o below the horizontal (hand is lower than shoulder).
if the person lets her arm swing freely from an initial straight-out parallel-to-the-ground position, when is the angular acceleration of the arm about the shoulder the greatest?
case 1: immediately after her arm begins to swing.
case 2: when the arm is vertical.
case 3: the angular acceleration is constant.
Answers: 2
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In which of the following cases is the torque about the shoulder due to the weight of the arm the gr...
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