What is the value of "G" and "g" on the moon solve it clearly and short because it is 2 marks questionalso If the net external force acting on a body is 0 then the total momentum is ________a) 0 b) variable c) constant d) information not sufficient

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by chandraharish

2014-10-26T13:07:02+05:30

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Gravitational force of attraction on the Moon is given by

g on the Moon is found to be around 1/6th of g on the Earth.  So it is around 9.81/6 m/sec²
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If the net external force on a body is zero, it means the body has an acceleration of 0.  It means the velocity is constant (it can be zero also).  So linear momentum is a constant.over time.   It can be zero also.

==> Force = rate of change in momentum. = 0.  SO momentum is a constant.