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EXERC Ir R is the radius of the earth and theacceleration due to gravity on the earth'ssurface, the mean density of the earth is(1) 4G/3gR(2) 36R/4GA384 RG(4) Rg/126 |
| Answer» INCREASE in POTENTIAL energyΔU=U 2 −U 1 =[− (R+ 5R )GMM ]−[− RGMm ]= RGMm − 6R5GMm = 6RGMm = 6RgR 2 m = 6mgR =mg. 65h = 65 mgh | |