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JEE Mains 24-Jan-2023 Shift 1 Solved Paper
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© examsnet.com
Question : 2
Total: 90
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 :
[24-Jan-2023 Shift 1]
Both statement I and statement II are false
Statement I is true but Statement II is false
Both Statement I and Statement II are true
Statement I is false but Statement II is true
Validate
Solution:
Statement-1
When elevator is moving with uniform speed
T
=
F
g
Statement-2
When elevator is going down with increasing speed, its acceleration is downward.
Hence
W
−
N
=
W
g
×
a
N
=
W
(
1
−
a
g
)
i.e. less than weight.
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