A) \[0{}^\circ \]
B) \[30{}^\circ \]
C) \[60{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: C
Solution :
[c] \[\operatorname{W}=F\,\,s\,\,cos\,\,\theta ,cos\,\theta =\frac{W}{F\,s}=\frac{25}{5\times 10}=\frac{1}{2}\] \[\theta =60{}^\circ .\]
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