An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :

(a) acceleration

(b) momentum

(c) potential energy

(d) kinetic energy

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Solution

(a) When both spheres are dropped simultaneously from a tower, they have same acceleration. Because, during free fall acceleration of body becomes equals to (g = 9.8 m/s2) and ‘g’ depends on mass of earth and radius of earth.

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Q. An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :

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(b) momentum
(c) potential energy
(d) kinetic energy

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An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same : (a) acceleration (b) momentum (c) potential energy (d) kinetic energy

(a) When both spheres are dropped simultaneously from a tower, they have same acceleration. Because, during free fall acceleration of body becomes equals to (g = 9.8 m/s2) and ‘g’ depends on mass of earth and radius of earth.

An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both the spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same :

(a) acceleration

(b) momentum

(c) potential energy

(d) kinetic energy