# Find Force M Exerted by Muscle in Test Apparatus

• mikefitz
In summary, the conversation discusses finding the horizontal force exerted by a flexor muscle on a person's forearm. The person exerts a horizontal force of 192 N in the test apparatus, with a length of 0.31 m and a height of 0.047 m. The torque for the 0.31 m length is known to be 59.52 Nm, but there is uncertainty about how to calculate the torque for the second length of 0.047 m. It is mentioned that the sum of the moments about the elbow joint must equal 0, and there is a question about whether this means the torque for both points can be calculated and added in an equation to be set equal to 0.
mikefitz
A person exerts a horizontal force |F| = 192 N in the test apparatus shown in the drawing. Find the horizontal force M (magnitude and direction) that is flexor muscle exerts on his forearm. (L = 0.31 m, h = 0.047 m)

http://img238.imageshack.us/img238/1465/c9p17iy6.jpg

I know that the torque for the .31m length is equal to 59.52 Nm; how do I begin to solve the force M for the second length of .047m?

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The sum of the moments about the elbow joint must = 0.

does this mean I can calculate the torque for both points and add them in an equation and set them equal to 0?

## 1. What is the purpose of the "Find Force M Exerted by Muscle in Test Apparatus" experiment?

The purpose of this experiment is to measure the amount of force exerted by a muscle in a controlled test environment. This information can be used in various fields of study, such as sports science, physiology, and biomechanics.

## 2. How is the force exerted by the muscle measured in this experiment?

The force is measured using a test apparatus, which typically consists of a force transducer connected to the muscle via a tendon. The transducer converts the force into an electrical signal, which can be recorded and analyzed.

## 3. What factors can affect the force exerted by a muscle in this experiment?

There are several factors that can affect the force exerted by a muscle, including the type of muscle being tested, the length of the muscle at rest, the speed of contraction, and the amount of resistance applied to the muscle.

## 4. How can the results of this experiment be used in practical applications?

The results of this experiment can be used to improve athletic performance, design rehabilitation programs for injured muscles, and understand the mechanisms behind muscle fatigue and strength training.

## 5. Are there any safety precautions that should be taken when conducting this experiment?

Yes, it is important to follow proper safety protocols when conducting this experiment. This may include wearing protective gear, using calibrated equipment, and having a trained professional oversee the experiment to prevent any injuries or accidents.

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