18) It takes the elevator in a skyscraper 4.2 s to reach its cruising speed of 1

Question

18) It takes the elevator in a skyscraper 4.2s to reach its cruising speed of 12m/s . A 62kg passenger gets aboard on the ground floor.

Part A

What is the passenger's weight before the elevator starts moving?

Express your answer to two significant figures and include the appropriate units.

Part B

What is the passenger's weight while the elevator is speeding up?

Express your answer to two significant figures and include the appropriate units.

Part C

What is the passenger's weight after the elevator reaches its cruising speed?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

A)62*9.81

=608.22 N

B.)a of the lify=12/4.2

=2.86 m/s^2

N=608.22+62*2.86

=785.36 N

c.)after cruising speed it will same as the original one

=608.22 N ans

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