A 0.60 kg object weighs 20 N on the surface of an unknown planet. The radius of the planet is measured to be 4 x 106 m. Determine the gravitational acceleration at a distance of 2 x 106 m directly above the surface of the planet.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

newton's first law of motion

because growing process had stoped after 4-5 year

i think the answer is bone