Multiple-Concept Example 10 reviews the approach and some of the concepts that are pertinent to this problem. The figure shows a model for the motion of the human forearm in throwing a dart. Because of the force M applied by the triceps muscle, the forearm can rotate about an axis at the elbow joint. Assume that the forearm has the dimensions shown in the figure and a moment of inertia of 0.068 kg-m² (including the effect of the dart) relative to the axis at the elbow. Assume also that the force M acts perpendicular to the forearm. Ignoring the effect of gravity and any frictional forces, determine the magnitude of the force M needed to give the dart a tangential speed of 4.6 m/s in 0.10 s, starting from rest.
Multiple-Concept Example 10 reviews the approach and some of the concepts that are pertinent to this problem. The figure shows a model for the motion of the human forearm in throwing a dart. Because of the force M applied by the triceps muscle, the forearm can rotate about an axis at the elbow joint. Assume that the forearm has the dimensions shown in the figure and a moment of inertia of 0.068 kg-m² (including the effect of the dart) relative to the axis at the elbow. Assume also that the force M acts perpendicular to the forearm. Ignoring the effect of gravity and any frictional forces, determine the magnitude of the force M needed to give the dart a tangential speed of 4.6 m/s in 0.10 s, starting from rest.
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![Multiple-Concept Example 10 reviews the approach and some of the concepts that are pertinent to this problem. The figure shows a
model for the motion of the human forearm in throwing a dart. Because of the force M applied by the triceps muscle, the forearm can
rotate about an axis at the elbow joint. Assume that the forearm has the dimensions shown in the figure and a moment of inertia of
0.068 kg-m² (including the effect of the dart) relative to the axis at the elbow. Assume also that the force M acts perpendicular to the
forearm. Ignoring the effect of gravity and any frictional forces, determine the magnitude of the force M needed to give the dart a
tangential speed of 4.6 m/s in 0.10 s, starting from rest.
Number
Units
Axis at elbow joigt
M
0.28 m
0.025 m](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F85ad87df-e9e7-4194-92cc-5a59559bdfb7%2F7d511989-d606-425b-8f41-dd3142291b46%2Fvafo2w6_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Multiple-Concept Example 10 reviews the approach and some of the concepts that are pertinent to this problem. The figure shows a
model for the motion of the human forearm in throwing a dart. Because of the force M applied by the triceps muscle, the forearm can
rotate about an axis at the elbow joint. Assume that the forearm has the dimensions shown in the figure and a moment of inertia of
0.068 kg-m² (including the effect of the dart) relative to the axis at the elbow. Assume also that the force M acts perpendicular to the
forearm. Ignoring the effect of gravity and any frictional forces, determine the magnitude of the force M needed to give the dart a
tangential speed of 4.6 m/s in 0.10 s, starting from rest.
Number
Units
Axis at elbow joigt
M
0.28 m
0.025 m
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