GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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coin
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feather
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none of the above
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they will reach at the same time
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Detailed explanation-1: -This air will apply a resistive force on the feather as well as on the coin. This force is known as a force of viscosity. The magnitude of this force is proportional to the surface area. A feather has a larger surface area than a coin.
Detailed explanation-2: -The coin will reach the ground first.
Detailed explanation-3: -The air resistance or friction by air for the feather will be more due to its large surface area. So the coin will go fast and strike the ground.
Detailed explanation-4: -What it does: When the tube is evacuated, the “coin” and “feather” fall at the same rate. When air is introduced into the tube, the “feather” falls at a slower rate. Concepts Demonstrated: The principle that, in the absence of air resistance, all objects at a given location fall with the same constant acceleration.
Detailed explanation-5: -Answer. If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height.