Grade 11Mechanics
More than one correct Answer anyone a humble requestDetailed solution please
More than one correct
Answer anyone a humble request
Detailed solution please
1 Answer
Arun
m: Mass of block A
M: Mass of block B
When B leaves contact, its entire weight must be balanced by the spring force (so that the normal reaction goes to zero).
This gives
k x = M g
where x is the amount by which spring expands.
This would mean that the block A has moved down by an amount x.
Using conservation of energy,
m g x = 0.5 k x^2
Solve to get m = M/2.
M: Mass of block B
When B leaves contact, its entire weight must be balanced by the spring force (so that the normal reaction goes to zero).
This gives
k x = M g
where x is the amount by which spring expands.
This would mean that the block A has moved down by an amount x.
Using conservation of energy,
m g x = 0.5 k x^2
Solve to get m = M/2.
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