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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
A Rajmohan Dora posted an Question
May 14, 2020 • 19:21 pm
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30 points
30 points
- IIT JAM
- Physics (PH)
Two objects of masses m, = 200 gm and m, = 500 gm possess velocities v, = 10î m/sec v, = 3i-5j m/sec. just prior to a collision during which they become permane
Two objects of masses m, = 200 gm and m, = 500 gm possess velocities v, = 10î m/sec V, = 3i-5j m/sec. Just prior to a collision during which they become permanently attachad each other, then (A) (B) (C) (D) mlsec. an ached 23. The velocity of center of mass is 5i+25j The initial momentum in the center of mass frame is 35i +25j kg.m/sec. The final momentum in the center of mass frame is zero. Final K.E. of the system after collision is 8.75 Joule.
3 Answer(s)
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Ruby negi
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dear, the option b, c is asking for initial and final momentum in center of mass frame so you have to first find the velocity in center of mass frame.. here is the solution... according to this option a, b, d is incorrect and option c is correct..
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Dhairya sharma Best Answer
hope u will get it.
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Dhairya sharma
yes dear u are ri8 option 3 is correct see the attached. that velocity of composite system in cm frame is zero.
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Dhairya sharma
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all first three options are not correct . the only possibility is 4 to be correct. I will attach the for 4th option file
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Ruby negi
here is solution for option a , d.. in the previous attached page , solution is for option b and c...