FIGURE 1 shows a horizontal human arm lifting a dumbbell. The forearm is in equilibrium under the action of the weight W of the dumbbell, the tension T in the tendon connected to the biceps muscle, and the force E exerted on the forearm itself. (For clarity, the point A where the tendon is attached is drawn farther from the elbow than its actual position) Given the weight of the forearm is 20 N and the mass of the dumbbell is 20 kg. The angle between the tension force and the horizontal, ? is 80°. The length of the horizontal arm is 0.30 m. The horizontal distance between elbow pivot and point A is 0.050 m. Find T and the vector E and draw free body diagram for this case. FIGURE 1FIGURE 1 shows a horizontal human arm lifting a dumbbell. The forearm isin equilibrium under the action of the weight W of the dumbbell, the tension Tin the tendon connected to the biceps muscle, and the force E exerted on theforearm itself. (For clarity, the point A where the tendon is attached is drawnfarther from the elbow than its actual position) Given the weight of the forearmis 20 N and the mass of the dumbbell is 20 kg. The angle between the tensionforce and the horizontal, 0 is 80°. The length of the horizontal arm is 0.30 m.The horizontal distance between elbow pivot and point A is 0.050 m. Find T andthe vector E and draw free body diagram for this case.

Given: Weight of the dumbbell = W Tension in tendon =T Force exerted on forearm = E Weight of the…

Answered: FIGURE 1 FIGURE 1 shows a horizontal…

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter12: Static Equilibrium And Elasticity

Section: Chapter Questions

Problem 26P: Find the magnitude of the tension in each supporting cable shown below. In each case, the weight of...

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FIGURE 1 shows a horizontal human arm lifting a dumbbell. The forearm is in equilibrium under the action of the weight W of the dumbbell, the tension T in the tendon connected to the biceps muscle, and the force E exerted on the forearm itself. (For clarity, the point A where the tendon is attached is drawn farther from the elbow than its actual position) Given the weight of the forearm is 20 N and the mass of the dumbbell is 20 kg. The angle between the tension force and the horizontal, ? is 80°. The length of the horizontal arm is 0.30 m. The horizontal distance between elbow pivot and point A is 0.050 m. Find T and the vector E and draw free body diagram for this case.

FIGURE 1
FIGURE 1 shows a horizontal human arm lifting a dumbbell. The forearm is
in equilibrium under the action of the weight W of the dumbbell, the tension T
in the tendon connected to the biceps muscle, and the force E exerted on the
forearm itself. (For clarity, the point A where the tendon is attached is drawn
farther from the elbow than its actual position) Given the weight of the forearm
is 20 N and the mass of the dumbbell is 20 kg. The angle between the tension
force and the horizontal, 0 is 80°. The length of the horizontal arm is 0.30 m.
The horizontal distance between elbow pivot and point A is 0.050 m. Find T and
the vector E and draw free body diagram for this case.

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