A particle of mass m moving with a velocity u makes an elastic one-dimensional collision with a stationary particle of mass m establishing a contact with it for extremely small time T. Their force of contact increases from zero to F 0 linearly in time 
, remains constant for a further time 
and decreases linearly from F 0 to zero in further time 
as shown. The magnitude possessed by F 0 is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Change in momentum = Impulse
= Area under force-time graph
∴ ∴ 
Area of trapezium
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
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