A) \[\theta =0{}^\circ \]
B) \[\theta =30{}^\circ \]
C) \[\theta =90{}^\circ \]
D) \[\theta =180{}^\circ \]
Correct Answer: C
Solution :
\[{{P}_{x}}=2\cos t\], \[{{P}_{y}}=2\sin t\] \\[\vec{P}=2\cos t\ \hat{i}+2\sin t\ \hat{j}\] \[\vec{F}=\frac{d\vec{P}}{dt}=-2\sin t\ \hat{i}+2\cos t\ \hat{j}\] \[\vec{F}.\vec{P}=0\]\\[\theta =90{}^\circ \]You need to login to perform this action.
You will be redirected in
3 sec