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InterviewSolution
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121. A system of particles is moving with some initial velocity u. If linear momentum of the system is conserved, then 1) net external force on system must be zero 2) net torque on system must be zero 3) all forces acting on system must be zero 4) both 1 and 3 |
| Answer» 121. A system of particles is moving with some initial velocity u. If linear momentum of the system is conserved, then 1) net external force on system must be zero 2) net torque on system must be zero 3) all forces acting on system must be zero 4) both 1 and 3 | |