3. A family rented a pontoon and cruised across the lake at 15 mph for 1.85 hours. How many
1 answer:
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Answer:
<u> </u><u>The magnitude of the force exerted by the biceps </u><u> is 218.38N</u>
<u>The magnitude of the force exerted by the elbow </u><u> is 194.37N</u>
Explanation:
Firstly , lets calculate the magnitude of force exerted by biceps -
Mass of the forearm=
Mass of the ball =
= 0.950kg
so, weight of the forearm=
g
weight of the ball=
g
Now , balancing torque about the elbow , we have-
(here , distance of the bicep is 2.50cm = 0.025m and distance of the ball is 36cm= 0.36m)
Now putting the given values in the formula -
Now, lets calculate the force exerted by elbow -
Balancing the vertical forces