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

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}

(C) \sqrt{0.7}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
Tags: No tags

Add a Comment

Your email address will not be published. Required fields are marked *