Kaymant sir he;lp...how to write constraint here

BITSAT 2015 Discussion Forum › Mechanics questions › Kaymant sir he;lp...how to write constraint here

#Physics #Mechanics

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6 Answers

66

kaymant ·2011-03-09 09:19:31

Use the fact that the velocity of A relative to O is along the tangential direction.

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49

Subhomoy Bakshi ·2011-03-09 10:30:13

using energy conservation!

2mgR(1+cos@) = mv²+mu²+Mu²

using momentum conservation along horizontal direction,
m(vcos@-u)+M(-u)=0

using the above two we get the relation for u!

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kunl ·2011-03-11 08:31:47

@kaymant sir...can u plz show how can we use that fact to obtain third equation??

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Subhomoy Bakshi ·2011-03-11 10:33:37

what u took as v is my v+u

so tangential velocity in ur case is v-u

the |v_x|=|v-u|cos@ - u

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seoni ·2011-03-11 10:39:22

subhomoy, check again

c.o.e eqn will be

2mgR(1+cos@) = mv2+mu2-2mu2cosQ+Mu2

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Subhomoy Bakshi ·2011-03-11 12:20:45

;) seems u r correct! :D :D

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