Use the Parallelogram Rule to Find the Magnitude of the Resultant

Multiple Choice

Use the parallelogram rule to find the magnitude of the resultant force for the two forces shown in the figure. Round to
one decimal place.
-What is the minimum force required to prevent a ball weighing $20.7 \mathrm { lb }$ from rolling down a ramp inclined $12.2 ^ { \circ }$ with the horizontal?

A) $4.4 \mathrm { lb }$
B) $10.1 \mathrm { lb }$
C) $2.2 \mathrm { lb }$
D) $20.2 \mathrm { lb }$