Question 365: Centre of Mass and Rotational Motion

Question

Angular momentum of the particle rotating with a central force is constant due to

Accepted Answer

We know that $\overrightarrow {{	au _c}}  = {{d\overrightarrow {{L_c}} } \over {dt}}$
where $\overrightarrow {{	au _c}} $ torque about the center of mass of the body and $\overrightarrow {{L_c}}  = $ Angular momentum about the center of mass of the body.
Given that $\overrightarrow {{L_c}}  = $ constant.
$	herefore$ ${{d\overrightarrow {{L_c}} } \over {dt}}$ = 0
$ \Rightarrow $ $\overrightarrow {{	au _c}}  = 0$  [as $\overrightarrow {{	au _c}}  = {{d\overrightarrow {{L_c}} } \over {dt}}$]

Answer

constant torque

Answer

constant force

Answer

constant linear momentum

Answer

zero torque

Centre of Mass and Rotational Motion

Angular momentum of the particle rotating with a central force is constant due to

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