- #1
rachael
- 55
- 0
8 A boy of mass 65 kg stands on the floor of an elevator.
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 shouldn't it be ma=mg-N, where mg=650 and ma=65?
c,d,e.i don't get these questions
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 shouldn't it be ma=mg-N, where mg=650 and ma=65?
c,d,e.i don't get these questions