Answer to Question #145798 in Classical Mechanics for Sridhar

Question #145798
In an earth satellite moving in a circular orbit a piece of metal (weighing 0.016kg on the earth) is weighed by a spring balance while the metal is suspended in water.If the density of metal is 8 times of water density then the recorded weight will be?
Answer : zero
1
Expert's answer
2020-11-24T05:50:27-0500

"P = m (g \u2013 a)"

"\\text{Rotating in a circle, the satellite moves with centripetal acceleration, }"

"\\text{and the only force that can give it this acceleration is gravity.}"

"a= g \\text{ Hence the body weight is zero}"

"\\text{Submerging the body in liquid will not change the situation.}"

"\\text{Archimedean force depends on the weight of the displaced liquid }"

"\\text{and is also equal to zero.}"

Answer: the recorded weight will be zero


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