Question

What is the force (FBiceps) the biceps muscle must exert to hold the forearm at an angle ? = 60° with the horizontal as shown in the figure? Assume that the forearm and the hand together have a combined mass of 3.0 kg, and that their combined centre of gravity is at the centre of their total length. The biceps muscle is connected to the forearm 4.0 cm from the elbow joint. A. 110 N B. 11 N C. 29 N D. 7.8 N

          What is the force (FBiceps) the biceps muscle must exert to hold the forearm at an angle ? = 60° with the horizontal as shown in the figure? Assume that the forearm and the hand together have a combined mass of 3.0 kg, and that their combined centre of gravity is at the centre of their total length. The biceps muscle is connected to the forearm 4.0 cm from the elbow joint.

A. 110 N
B. 11 N
C. 29 N
D. 7.8 N

What is the force (FBiceps) the biceps muscle must exert to hold the forearm at an angle ? = 60° with the horizontal as shown in the figure? Assume that the forearm and the hand together have a combined mass of 3.0 kg, and that their combined centre of gravity is at the centre of their total length. The biceps muscle is connected to the forearm 4.0 cm from the elbow joint.

A. 110 N
B. 11 N
C. 29 N
D. 7.8 N

Added by Carolyn M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Ashar Tanveer

07/24/2022

Step 1

The weight (W) is the product of mass (m) and gravity (g). Given that the mass is 3.0 kg and gravity is approximately 9.8 m/s^2, we get: W = m * g = 3.0 kg * 9.8 m/s^2 = 29.4 N This weight acts downward at the center of gravity of the forearm and the hand. Show more…

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What is the force (FBiceps) the biceps muscle must exert to hold the forearm at an angle ̑ = 60° with the horizontal as shown in the figure? Assume that the forearm and the hand together have a combined mass of 3.0 kg, and that their combined centre of gravity is at the centre of their total length. The biceps muscle is connected to the forearm 4.0 cm from the elbow joint. A. 110 N B. 11 N C. 29 N D. 7.8 N