A man holds a 183-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M ,which is applied perpendicular to the forearm. The forearm weighs 24.5 N and has a center of gravity as indicated. Find (a) the magnitude of M and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint. Upper arm bone -Flexor muscle M Elbow joint 0.0510 m1 C0.0890 m -0.330 m-
A man holds a 183-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M ,which is applied perpendicular to the forearm. The forearm weighs 24.5 N and has a center of gravity as indicated. Find (a) the magnitude of M and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint. Upper arm bone -Flexor muscle M Elbow joint 0.0510 m1 C0.0890 m -0.330 m-
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A man holds a 183-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of the flexor muscle force M→, which is applied perpendicular to the forearm. The forearm weighs 24.5 N and has a center of gravity as indicated. Find (a) the magnitude of M→ and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal) of the force applied by the upper arm bone to the forearm at the elbow joint.
Transcribed Image Text:A man holds a 183-N ball in his hand, with the forearm horizontal (see the figure). He can support the ball in this position because of
the flexor muscle force M , which is applied perpendicular to the forearm. The forearm weighs 24.5 N and has a center of gravity as
indicated. Find (a) the magnitude of M and the (b) magnitude and (c) direction (as a positive angle counterclockwise from horizontal)
of the force applied by the upper arm bone to the forearm at the elbow joint.
Upper
arm bone
Flexor muscle
Elbow
joint
0.0510 mt
0.0890 m
0.330 m
(a) Number
i
Units
(b) Number
i
Units
(c) Number
i
Units
>
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