Question

For this exercise to keep your arms crossed over our chest and held close to your body. You cannot use your arms in a j e r k y motion to raise your upper body off the floor.

A) Bicep Curl
B) Push up
C) Ab Twister
D) Curl up

Answer 1

The force on the bicep muscle during a curl is greater than the weight of the due to the principle of torque, with the bicep applying a force greater as its lever arm is shorter relative to the distance from the elbow joint.

Step-by-step explanation:

When performing a bicep curl with a, the force placed on the bicep muscle is indeed greater than the weight of the. This is due to the concept of torque, which takes into account the force applied and the distance from the pivot point, in this case, the elbow. The bicep muscle acts closer to this pivot point than the does, resulting in a smaller lever arm. Therefore, the muscle must exert a greater force to lift the same weight.

To determine how much greater the force is, we can use the principle that the bicep force is inversely proportional to the respective lever arm lengths. For example, if the is ten times further from the elbow than the bicep's attachment point, the bicep would need to exert a force that is ten times the weight of the, which could be approximately 200 pounds.

It is also important to note that as the is curled towards the body, the muscle's force requirement decreases because the distance to the elbow decreases, consequently reducing the required torque. This is an application of the biomechanics of muscles, which states that muscles can only contract; they must work in pairs to facilitate movement.