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## Homework Statement

Calculate the net force acting on the object indicated in the following diagrams. Show your work.

1)

2)

## Homework Equations

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## The Attempt at a Solution

1)

8.0 N (north) + 10.0 N (south)

- 8.0 N (south) + 10.0 N (south)

= 2.0 N (south)

c= [ (2.0 N)

^{2}+ (17.0 N)

^{2}- 2 (2.0 N) x (17.0 N) cos 45° ]

^{1/2}

c= 15.6 N

sinA/2.0N = sin45°/15.6N

A= 5.2°

A= 45° - 5.2° = 39.8°

F

_{net}= 15.6 N [N 39.8° W]

2)

c= [ (12 N)

^{2}+ (15 N)

^{2}- 2 (12 N) x (15 N) cos124°]

c= 23.9 N

sinA/15N = sin124°/ 23.9 N

A = 31°

F

_{net}= 23.9 N [ N 31° E]

is this correct?