A vessel at rest explodes into three pieces. Two pieces having equal masses fly off perpendicular to one another with the same velocity 30 meter per second. The third piece has three times mass of each of another piece. The magnitude and direction of the velocity of the third piece will be
and 135° from either
and 45° from either
and 135° from either
and 45° from either
Text Solution
Verified by ExpertsA
Let two pieces are having equal mass m and third piece have a mass of 3m.
According to law of conservation of linear momentum. Since the initial momentum of the system was zero, therefore final momentum of the system must be zero i.e. the resultant of momentum of two pieces must be equal to the momentum of third piece. We know that if two particle possesses same momentum and angle in between them is 90° then resultant will be given by 
Let the velocity of mass 3m is V. So 
∴ ∴ 
and angle 135° from either.
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