Physics 50
Proficiency Test 1(sample)
(Time: 15 minutes)
25 points
By Todd Sauke
Name ________________________
Section # ________
The three forces described below act on an object at the origin of a coordinate system.
The given angles are measured counterclockwise around from the +
x
axis unless other-
wise specified.
The "newton", letter symbol N, is a unit of force in the metric system.
F
1
= 64.0 N
at
–17 º
F
2
= 18.0 N
at
0.46 rad
F
3
= 47.0 N
at
43 º
clockwise from the negative
y
axis.
Convert the angle given in rad (radians) to degrees.
F
2
= ______________ º
Sketch the three forces as
approximately
scaled arrows on a coordinate system below.
Use enough accuracy to show approximate length and which quadrant each vector is in.
Make a vector addition table as in class for summing the components of these vectors

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