Momentum and CollisionHard
Question
A block of mass ′M′ area of cross-section ′A′ & length is placed on smooth horizontal floor. A force ′F′ is applied on the block as shown. If Y is young modulus of material, then total extension in the block will be :
Options
A.
B.
C.
D.cannot extend
Solution
Acceleration a = 
then tension ln dx =
Extension in dx element =
Total extension
then tension ln dx =
Extension in dx element =
Total extension
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