- #1

Ronaldo95163

- 77

- 1

## Homework Statement

Figure 5 below shows an approximation of the system of forces acting on the human forearm. The weight of the forearm is 25N and acts 15cm from the elbow of a girl lifting a dumbbell of weight 50N

Find the

1)Force, F, exerted on the human forearm by the muscle in the upper arm

2)Forces acting at the point, E of the elbow

3)Tension if theta is 45 degrees

## Homework Equations

sum of ACW = sum of CW

sum of upward forces = sum of downward forces

## The Attempt at a Solution

My Attempt is in the pictures below