Lecturer and Coach (School Edu. Dept.) Comp. When an object is dropped inside an elevator, its motion is governed by gravity relative to the elevator. If the elevator is stationary or moving with a uniform speed (either upwards or downwards), the acceleration due to gravity acting on the coin is the same. Since the initial conditions (dropped from rest relative to the elevator) and the acceleration due to gravity are the same in both scenarios, the time taken for the coin to reach the floor will be the same. This is because the physics inside the uniformly accelerating (or non-accelerating) frame of reference is the same as in an inertial frame of reference (Galilean relativity).
A person standing on the floor of an elevator drop a coin. The coin reaches the floor of the elevator in a time t1 when the elevator is stationary and in time t2 when it is moving with uniform speed, then - (1) The relation between t1 and t2 depends on whether lift is moving upward or downward. (2) t1 > t2 (3) t1 < t2 (4) t1 = t2 (5) Question not attempted
Asked in Exam 2024 Group a 2024 · Topic: Motion under Gravity (Equations of motion for objects under free fall)
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