|| BIO Hold your upper arm vertical and your lower arm horizontal with your hand palm-down on a table, as shown in Figure P8.47 O. If you now push down on the table, you'll feel that your triceps muscle has contracted and is trying to pivot your lower arm about the elbow joint. If a person with the arm dimensions shown pushes down hard with a 90 N force (about 20 lb), what force must the triceps muscle provide? Figure P8.47 Triceps 30 cm 2.4 cm
|| BIO Hold your upper arm vertical and your lower arm horizontal with your hand palm-down on a table, as shown in Figure P8.47 O. If you now push down on the table, you'll feel that your triceps muscle has contracted and is trying to pivot your lower arm about the elbow joint. If a person with the arm dimensions shown pushes down hard with a 90 N force (about 20 lb), what force must the triceps muscle provide? Figure P8.47 Triceps 30 cm 2.4 cm
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Do the question and do not ignore the mass of the forearm and hand in your calculation. The mass of the forearm and hand = 1.60̅4 kg.
Transcribed Image Text:47. || BIO Hold your upper arm vertical and your lower arm horizontal with your hand palm-down on a
table, as shown in Figure P8.47 D. If you now push down on the table, you'lIl feel that your triceps
muscle has contracted and is trying to pivot your lower arm about the elbow joint. If a person with
the arm dimensions shown pushes down hard with a 90 N force (about 20 Ib), what force must the
triceps muscle provide?
Figure P8.47
Triceps
30 cm
2.4 cm
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