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an elevator car whose floor to ceiling distance is equal to 2.7m starts from rest with a constant acceleration of 1.2 ms-2 . two seconds later , a bolt drops from car's ceiling.the time taken by bolt to hit floor of elevtor is..plz say..
mention whether elevator is going up or down
this problem will be easier if u solve it in frame of elevator
when bolt gets detached its initial velocity w.r.t. elevator is 0
abE = ab(g) - aE(g)
=g - a if elevator is going down taking down +ve
or g+a " " " " " up " " "
now 2.7 = ubE t + abEt2/2
= 0 + abEt2/2
imp - block moves 2.7 w.r.t elevator
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