Question

a spherical stone and a spherical metallic ball of same size and mass are dropped from the same height which one a stone or a metal ball will reach the earth surface justify your answer assume that there is no air fiction​

Answer 1

Answer:

Spherical stone will reach the ground at first.As there may be strongly induced Eddy currents in the metallic ball will oppose its motion towards the ground.So,spherical stone will reach the earth faster

Answer 2

Both the metallic and stone ball will fall at the same time when there is no air resistance.

Explanation:

When we have two balls of same size and mass one made up of metal and the other one of stone and they are dropped from the same height assuming that there is no air resistance both the balls will fall at the surface of the earth at the same time.

Since both the balls fall under the same acceleration due to gravity, they both are initially at rest before the release and travel through the same distance without air resistance.

From the equation of motion:

$h=u.t+\frac{1}{2} g.t^2$

here:

u = initial velocity

t = time taken

g = acceleration due to gravity

h = height of fall

The above equation is  independent of mass and other parameters are same.

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TOPIC: gravity, laws of motion, equations of motion

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