If a man weighs 90 kg on the surface of the earth, the height above the surface of the earth of radius R , where the weight is 30 kg is

Question

If a man weighs 90 kg on the surface of the earth, the height above the surface of the earth of radius R , where the weight is 30 kg is, 0.73 R, 3 R, R, 2 R

MARKS App · Accepted Answer

Given, m g ′ m g = 30 90 or g ′ g = 1 3 Now, g ′ = g R 2 R + h 2 or g ′ g = R 2 R + h 2 = 1 3 or R R + h = 1 3 or R + h = 3 R or h = 3 - 1 R = 0.73 R

Search any question & find its solution

Looking for more such questions to practice?