Question

An athlete at the gym holds a 4.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg.


An athlete at the gym holds a 4.0 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4.0 kg. 


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Part A

What is the magnitude of the torque about his shoulder if he holds his arm straight out to his side


Part B 

What is the magnitude of the torque about his shoulder if he holds his arm straight, but 35° below horizontal? 

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