1.

(i) Can a body in translatory motion have angular momentum? Explain (ii) Why is it more difficult to revolve a stone by tying it to a longer string than by tying it to a shorter string?

Answer»

Solution :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
`|vecL|=rp SIN theta`
=0 only where `theta=0^(@) or 180^(@)`
(ii) Ml of stone `I ml^(2)(l to` length of string) l is large, `alpha` is very small
`tau=I alpha`
`alpha=(tau)/(I)=(tau)/(ml^(2))`
If l is large a is very small
`:.` more difficult to revolve.


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