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An elevator of mass M with a person of m...

An elevator of mass M with a person of mass m is moving upward with uniform velocity `vecv`. What is the power delivered by the elevator?

A

(I)(iv)(P)

B

(II)(i)(Q)

C

(III)(iii)`(R)`

D

(IV)(ii)(S)

Text Solution

Verified by Experts

The correct Answer is:
A
For elevator acceleration `1m//s^(2)`, tension in cord 2 and cord 3 decreases.
So `165+DeltaT-2xx(7.5-DeltaT)-150=(15)(1)`
`implies DeltaT=5N`
`implies` Tension in cord 2, `T_(2)=2.5N`
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