if a body of mass 10 kg allowed to moved freeely its weight becomes
Answers
If a body of mass 10 kg falls freely, its weight, zero and 98 N at the same time. It depends of from which frame of reference you observe it.
If you observe it from the same free falling reference frame of the mass, in this case the weight of the mass is zero. Why? Imagine a scale device coofalling freely with the mass and measure the weight of the mass by it. You cann't do it , the weight will be zero.
If you see the mass of freely falling from the reference frame linked to the Earth surface, you can imagine the mass m is in the gravity acceleration field of g intensity. Refering to Newton 2. law the mass m will be exerted a weight force of m*g = 98 N .
It doesn't belong to the question, but as an interesting experiment you could measure the weight with the same scale in a lift box falling in state of near to the terminal velocity. The weight in this case will be near to 98 N .(Remember, the reference frame here no longer is free falling) The reference frame become linked to the Earth.(atmosphere)
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