Final answer:
To find the magnitude of the force exerted by the biceps muscle when the angle between the forearm and upper arm is 60° and the lower arm is 30° above horizontal, we can use the concept of torque.
Step-by-step explanation:
The student is asking about the force exerted by the biceps muscle when the angle between the forearm and upper arm is 60° and the lower arm is 30° above horizontal. To determine the force, we can use the concept of torque. Torque is the cross product of the force vector and the lever arm vector. In this case, the force is 100N and the lever arm is the distance from the elbow joint to the hand.
To find the magnitude of the force exerted by the biceps muscle, we can use the equation:
Torque = Force x Lever Arm
In this equation, the torque is the product of the force and the lever arm, and the torque is related to the angle between the force vector and the lever arm vector.
Plugging in the values given in the question, we can calculate the magnitude of the force exerted by the biceps muscle.
Qn : A 60kg, 185cm male is holding a cable at 45° pulling 100N, in his right hand. He is holding the cable in a position where his upper arm is 55° below horizontal and his lower arm 30° above horizontal. Same angle hand and the forearm (i,e., can treat it as one segment).