1.

An object weight 72 N the Earth. What its weight at a height R/2 from Earth.

Answer»

Solution :We KNOW that`G = GM`
` g. = g (R/(R+h))^(2) = g(R/(R+R/2))^(2) = g ((2R)/(3R))^(2)`
`g . = 4/9 g `
WEIGHT W. = `4/9 W = 4/9 (72)`


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