1Will point A be IAOR?
Q1 A square lamina ABCD (side length=a) mass m is kept on an elastic surface.An impulse J is provided very close to vertex A.Find minimum value of impulse J that can flip the lamina.
will it be done this way ??
Assuming point A acts as ICOR
writing angular momentum eqn abt A assuming it attains angular velocity ω
and conserving energy upto highest point
Q2 Does an elastic surface imply all collisons occur elastically irrespective of the other body ??
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7 Answers
11Actually 1 very similar sum is done in HCV.....where u drop a ball from a ht. on a system that has 2 balls attachted to the ends of a rod - and the qsn was to find the minimum ht so the system does a complete rotation....What they did was to conserve energy upto the highest point ....in this case it'll obviously be for C....taking into account the angular velocity of the rod (in this case - it'll be the lamina) abt cm....however in this case IC won't help, coz arguments abt IC converts translation + rot into pure rotation...here it is pure rotation....
However I can relate this to that - it won't be much general of course....want it?
24sorry for using icor...
i meant that point A will act as hinge naa ??and it will be pure rotation