A striker is shot from a square carrom board from a point A exactly at midpoint of one of the walls with a speed 2 m/sec at an angle of 45° with the x-axis as shown. The collisions of the striker with the walls of the fixed carrom are perfectly elastic. The coefficient of kinetic friction between the striker and board is 0.2.
A
x coordinate of the striker when it stops (taking point O to be the origin and neglect friction between wall and striker) is 
.
.
B
y coordinate of the striker when it stops (taking point O to be the origin and neglect friction between wall and striker) is 
.
.
C
x coordinate of the striker when it stops (taking point O to be the origin and neglect friction between wall and striker) is 
.
.
D
y coordinate of the striker when it stops (taking point O to be the origin and neglect friction between wall and striker) is 
.
.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(a, b)
For the striker :
0 2 = (2) 2 – 2(0.2) (10) s ⇒ s = 1 m
From A to B :
S AB = 
= 
= 
m
Similarly : S BC = 
m
∴ The striker stops at the point C having coordinates 
.
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