A solid sphere and a hollow sphere are thrown horizontally from a cliff with equal velocities, respectively. Then which sphere reaches first on earth? (a) Solid sphere (b) Hollow sphere (c) Both sphere simultaneously (d) We cannot say because masses of spheres are not given

Answer: (c). Time of fall t = √(2h/g) depends only on height and g. It does not depend on mass, shape or horizontal speed (no air resistance). So the answer is (c) both reach simultaneously.

A solid sphere and a hollow sphere are thrown horizontally from a… | NEET 2000 (AIPMT)

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Horizontal Projectile & Inclined Plane

A solid sphere and a hollow sphere are thrown horizontally from a cliff with equal velocities, respectively. Then which sphere reaches first on earth?

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Answer: (c)

Time of fall $t = \sqrt{\frac{2h}{g}}$ depends only on height and $g$ .
It does not depend on mass, shape or horizontal speed (no air resistance).
So the answer is (c) both reach simultaneously.

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Horizontal Projectile & Inclined Plane question from NEET 2000 (AIPMT)

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