more than one correct....help karo

IIT JEE 2015 Questions › Mechanics questions › more than one correct....help karo

Q1 torque T on a body about a given point is found top be equal to C x L where C is a constant vector and L is angular momentum of body abt that point.
Choose correct statements
a) L doesnt change with time
b) dL/dt is perpendicular to L at all instants of time
c) magnitude of L doesnt change with time

Q2

#Physics #Mechanics

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7 Answers

1

Philip Calvert ·2010-01-19 23:40:20

2) a,d
d is obvious

velocity arriving at B . = √2gh [by energy conservation]

= √2g(R+Rcos2Î¸) => a

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24

eureka123 ·2010-01-20 01:47:48

ya philip u r rite...
I missed out the word "fixed"

no akari

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24

eureka123 ·2010-01-20 18:54:30

Q1 plzzz

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11

swaraj jena ·2010-01-21 18:43:33

iz the answer a,b for 1st one

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3

msp ·2010-01-21 19:30:00

q1) a,b are rite,dunno whether c is rite or rong.do u have ne clue eure. is a,b are in the rite options.

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24

eureka123 ·2010-01-21 19:41:44

where is d option swaraj ????

ans 1 is a,b,c ..

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11

swaraj jena ·2010-01-23 04:55:12

I can not understand how option c z correct

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