A steel ball and a wooden ball of the same diameter are released together from the top of a tower. In the absence of air resistance they both would reach the ground at the same time. The reason for this is that the force on each ball is the same. True / False.

Question

Itsy

Physics

4 July, 11:30

A steel ball and a wooden ball of the same diameter are released together from the top of a tower. In the absence of air resistance they both would reach the ground at the same time. The reason for this is that the force on each ball is the same. True / False.

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Answers (1)

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Brenda Curry · Answer 1

False

Explanation:

The steel ball and the wooden ball do not have the same force acting on them because their masses are different. But, they have the same acceleration which is the acceleration due to gravity g = 9.8 m/s².

Using the equation of motion under freefall, s = ut + 1/2gt². Since u = 0,

s = 1/2gt² ⇒ t = √ (2s/g)

Since. s = height is the same for both objects, they land at the same time neglecting air resistance.