A shell of mass 100 kg is fired horizontally from a cannon having a mass of 5 × 10 3 kg. The kinetic energy of the shell at the end of the barrel is 7.5 × 10 6 J. The kinetic energy imparted to the cannon due to recoil is :
Text Solution
Verified by ExpertsThe correct answer is:
C
m = 100 kg
M = 5 × 10 3 kg
initially system is at rest 
= 0, 
= 0, Δ 
= 0
shell = – 
Gun ⇒ P 2 shell = P 2 Gun
K shell = 
K Cannon = 
= 
= 
= 
K Cannon = K shell = 
= 
= 1.5 × 10 5 J
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