8 A boy of mass 65 kg stands on the floor of an elevator.(adsbygoogle = window.adsbygoogle || []).push({});

a What is the weight of the boy?

b What is the reaction of the floor of the elevator on

the boy?

The elevator starts to move upwards with an

acceleration of 1.0 m s–2.

c What is now the reaction of the floor of the elevator

on the boy?

After accelerating upwards for 2.0 s the elevator

continues with a constant upwards velocity.

d What is now the reaction of the floor of the elevator

on the boy?

e What would be the difference to your answer to

part c if the elevator had an acceleration of 1.0 m s–2

downwards?

a. i use w=mg

b.i don't understand y the answer remains the same shouldnt it be ma=mg-N, where mg=650 and ma=65?

c,d,e.i dont get these questions

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# Homework Help: Need help

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