Center of MassHard
Question
A bullet of mass m = 50 gm strikes (ᐃt ≈ 0)a sand bag of mass M = 5 kg hanging from a fixed point, with a horizontal velocity 
. If bullet sticks to the sand bag then the ratio of final & initial kinetic energy of the bullet is:
. If bullet sticks to the sand bag then the ratio of final & initial kinetic energy of the bullet is:Options
A.10-2
B.10-3
C.10-6
D.10-4
Solution
0.5 × vp + m × 0 = 5.05 v
∴
= 10-2
⇒
= (10-2)2 = 10-4.
∴
= 10-2⇒
= (10-2)2 = 10-4.Create a free account to view solution
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