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To a gro7nd observer the block C is moving with v(not) and the block A with v1 and B is moving with v2 relative to C as shown. Identify correct statement. A. v1-v2=v0 B. v1=v2 C. v1+v0= v2 D. None

To a gro7nd observer the block C is moving with v(not) and the block A with v1 and B is moving with v2 relative to C as shown. Identify correct statement.
A. v1-v2=v0
B. v1=v2
C. v1+v0= v2
D. None

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Grade:12th pass

2 Answers

Saurav
224 Points
4 years ago
to make it complex lets think of CONSTRAINT MOTION 
now if you are scared enough  just think of easier method
what strikes us now is LETS STOP C  or in other word talk everything relative to C
now its sipmle two blocks A and B connected with a thread (which is inextensible) and by commonsense now velocity of block A relative to C will be equal to velocity of B relative to C
that is v1-v(knot)=v2
that is optionA
 
 
aprove if it helps you as it motivates me to answer more 
Khimraj
3007 Points
4 years ago
Since in neither frame the string should break, the speed of blocks A and B along the string must be same in all frames.
Thus in the frame of block C, the speeds of blocks A and B along the string must be same.
Thus 
v1 – v2 = v0

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