Answer to Question #188103 in Physics for Riddhi

Question

Q7. A ball of mass 'm' is falling from rest power supplied by the gravitational a) sqrt (0.5m^ 2 g^ 3 h) b) sqrt(1.5m ^ 2 * g ^ 3 * h) sqrt(2m ^ 2 * g ^ 3 * h) zero from a height h^ prime (h R) above the surface of earth. What is the force of earth when the ball is at a height of h / 4 ?

Answer 1

$$F=mg\frac{R^2}{(R+0.25h)^2}$$