1. Can a body in translator y motion have angular momentum? Expla… - Vidyadip

Question

Can a body in translator y motion have angular momentum? Explain.
Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?

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Answer

(1) Yes, a body in translatory motion shall have angular momentum unless fixed point about which angular momentum is taken lies on the line of motion of body
$|\overrightarrow{ L }|= rp \sin \theta$
$=0 \text { only when } \theta=0^{\circ} \text { or } 180^{\circ}$
(2) $Ml$ of stone $I = ml ^2( I -$ length of string $) I$ is large, $a$ is very small
$\tau=l \alpha$
$\alpha=\frac{\tau}{I}=\frac{\tau}{m l^2}$
if $I$ is large $a$ is very small.
$\therefore$ more difficult to revolve.

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