A ball rolls of the top of a stair way with a horizontal velocity 𝑢 ms −1 . If the steps are ℎ metre and 𝑏 metre wide, the ball hits the edge of 𝑛th step, the time taken by the ball is

April 20, 2022

by Ezee_Notes

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Physics Problems

Question: A ball rolls of the top of a stair way with a horizontal velocity 𝑢 ms −1 . If the steps are ℎ metre and 𝑏 metre wide, the ball hits the edge of 𝑛th step, the time taken by the ball is

(A) $\dfrac{hu}{gb}$

(B) $\dfrac{2hu}{gb}$

(D) $\dfrac{hu^{2}}{2gb}$

Answer: option (B)

Solution: