405 joiht, as SHOWH II FIg. 0.01. P-6.15. An object of mass M= 10 kg is lifted by a standard man with the aid of a pulley, as shown in Fig. 6.62. The upper arm is held vertical and the lower arm has an angle of 0= 35° with the horizontal. The label c.m. marks the centre of mass of the lower arm. Consider the force due to the weight of the object M, the weight of the lower arm and hand, the tension due to the triceps muscle, and the force due to the humerus. For the lengths, we use the following values: 1, = 2 cm, , = 15 cm, and l = 40 cm. The lower arm and the hand have a mass of 2.3 kg. (a) What is the magnitude of the vertical force exerted on the lower arm by the triceps muscle, and (b) what is the magnitude of the vertical force exerted on the lower arm by the humerus? Hint: The triceps muscle pulls ver- tically upward.

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Chapter1: Units, Trigonometry. And Vectors
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P-6.15 please

405
joiht, as SHOWH II FIg. 0.01.
P-6.15. An object of mass M= 10 kg is lifted by a standard man
with the aid of a pulley, as shown in Fig. 6.62. The upper
arm is held vertical and the lower arm has an angle of
0= 35° with the horizontal. The label c.m. marks the
centre of mass of the lower arm. Consider the force due
to the weight of the object M, the weight of the lower
arm and hand, the tension due to the triceps muscle, and
the force due to the humerus. For the lengths, we use the
following values: 1, = 2 cm, , = 15 cm, and l = 40 cm.
The lower arm and the hand have a mass of 2.3 kg.
(a) What is the magnitude of the vertical force exerted
on the lower arm by the triceps muscle, and (b) what is
the magnitude of the vertical force exerted on the lower
arm by the humerus? Hint: The triceps muscle pulls ver-
tically upward.
Transcribed Image Text:405 joiht, as SHOWH II FIg. 0.01. P-6.15. An object of mass M= 10 kg is lifted by a standard man with the aid of a pulley, as shown in Fig. 6.62. The upper arm is held vertical and the lower arm has an angle of 0= 35° with the horizontal. The label c.m. marks the centre of mass of the lower arm. Consider the force due to the weight of the object M, the weight of the lower arm and hand, the tension due to the triceps muscle, and the force due to the humerus. For the lengths, we use the following values: 1, = 2 cm, , = 15 cm, and l = 40 cm. The lower arm and the hand have a mass of 2.3 kg. (a) What is the magnitude of the vertical force exerted on the lower arm by the triceps muscle, and (b) what is the magnitude of the vertical force exerted on the lower arm by the humerus? Hint: The triceps muscle pulls ver- tically upward.
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