A) \[0{}^\circ \]
B) \[30{}^\circ \]
C) \[60{}^\circ \]
D) \[90{}^\circ \]
Correct Answer: C
Solution :
Given, \[s=10m,\] \[F=5N,\] \[W=25J,\] \[\theta =?\] Work done, \[W=Fs\,\cos \theta \] \[\therefore \] \[\cos \theta =\frac{W}{Fs}=\frac{25}{5\times 10}=\frac{1}{2}\] \[=\cos \,{{60}^{o}}\] \[\therefore \] \[\theta ={{60}^{o}}\]You need to login to perform this action.
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