Q.

Given below are two statements:
Statement- I: An elevator can go up or down with uniform speed when its weight is balanced with the tension of its cable.
Statement-II: Force exerted by the floor of an elevator on the foot of a person standing on it is more than his/her weight when the elevator goes down with increasing speed.
In the light of the above statements, choose the correct answer from the options given below:

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a

Both Statement I and Statement II are false.

b

Both Statement I and Statement II are true.

c

Statement I is true but Statement II is false.

d

Statement I is false but Statement II is true.

answer is B.

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Detailed Solution

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 T = m(g ± a) for uniform speed, a = 0
 T = mg
When speeding down,
N = m(g-a) N < mg

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