An elevator car, whose floor to ceiling distance is equal to 2.7𝑚, starts ascending with constant acceleration of 1.2𝑚𝑠 −2. 2 𝑠𝑒𝑐 after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is

April 11, 2022

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Physics Problems

Question : An elevator car, whose floor to ceiling distance is equal to 2.7𝑚, starts ascending with constant acceleration of 1.2𝑚𝑠 −2. 2 𝑠𝑒𝑐 after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is

(A) $\sqrt{0.54}s$

(B) $\sqrt{6}_{s}$

(D) 1 s

Answer : option (C)

Solution :

An elevator car, whose floor to ceiling distance is equal to 2.7𝑚, starts ascending with constant acceleration of 1.2𝑚𝑠−2. 2 𝑠𝑒𝑐 after the start, a bolt begins falling from the ceiling of the car. The free fall time of the bolt is