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Free Particle Model Worksheet 3:
Quantitative Force Analysis & Vector Components

1. Determine the tension in each cable below. Draw a force diagram for the system before solving the problem. Case A - ball suspended on one cable Case B - ball suspended by two cables

2. Determine tension in each cable.

3. Find the horizontal and vertical components of the tension in the fishing line. Show your work.

4. A suspension bridge cable is connected to its anchor at a 20˚ angle. Draw a force diagram for the anchor, and then find the vertical and horizontal component forces on the anchor by the cable.

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5. A rock sits on a hill. Draw a force diagram for the rock that allows you to determine how much of the rock’s weight is parallel to the hill, (that would tend to make it slide down the hill) and how much of the rock’s weight is perpendicular to the hill (that tends to hold the rock in contact with the hill.)

6. A 2000 kg elephant stands on a ramp. Draw a force diagram to determine the components of the elephant’s weight parallel and perpendicular to the ramp.

7. Tarzan prepares to swing and much to his dismay, gets his loincloth stuck on a branch. He's left hanging with the vine pulling upward at a 40-degree angle and his loincloth pulling him horizontally to the right.
a. Draw a force diagram for Tarzan. Be sure to break angled forces into components and indicate which forces are equal with equality marks.

b. Write an equation for the vertical forces on Tarzan. (Look at your equality marks.)

c. Write an equation for the horizontal forces on Tarzan. (Look at your equality marks.)

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