Rotational and Circular Motion — Physics MCQs (Class 11)

A) $v=\sqrt{rg\tan\phi}$

B) $v=\sqrt{gr\tan\phi}$

C) $v=\sqrt{g/\tan\phi}$

D) $v=\sqrt{r/g}$

A) centripetal component

B) tangential component only

C) no radial component

D) weightless support

A) $a_{r}=\dfrac{v^{2}}{r}$

B) $a_{r}=v^{2}r$

C) $a_{r}=\dfrac{r}{v^{2}}$

D) $a_{r}=vr$

A) $a_{t}=r\alpha$

B) $a_{t}=\dfrac{\alpha}{r}$

C) $a_{t}=\dfrac{r}{\alpha}$

D) $a_{t}=r\omega$

A) $a=\dfrac{g\sin\theta}{1+\tfrac{I}{mR^{2}}}$

B) $a=g\sin\theta$

C) $a=\dfrac{g\sin\theta}{2}$

D) $a=\dfrac{g\cos\theta}{1+I/mR^{2}}$

A) axis of rotation

B) mass

C) speed of light

D) inertia of translation

A) no work at point of contact (ideal rigid surface)

B) positive work

C) negative work

D) always zero force

A) $\Delta\vec L=0$

B) $\Delta K=0$

C) $\Delta \omega=0$

D) $\Delta \theta=0$