While a person is walking, his arms swing through approximately a 45.0 ? angle i

Question

While a person is walking, his arms swing through approximately a 45.0? angle in 0.410s . As a reasonable approximation, we can assume that the arm moves with constant speed during each swing. A typical arm is 70.0cm long, measured from the shoulder joint.

What is the acceleration of a 0.900 gram drop of blood in the fingertips at the bottom of the swing?

Find the force that the blood vessel must exert on the drop of blood in part (a).

What force would the blood vessel exert if the arm were not swinging?

Explanation / Answer

So the total force is

The acceleration therefore is the terms in brackets,

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