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