Asked by lomonoyan
62kg person in an elevator is moving up at a constant speed of 4.0m/s for 5.0s
a) calculate the work done by the normal force on the person.
b) calculate the work done by the force of gravity on the person .
c) How would your answer change if the elevator were moving down at 4.0m/s for 5.0s ?!
I am getting 6082.2 instead of 1200J for both help please
a) calculate the work done by the normal force on the person.
b) calculate the work done by the force of gravity on the person .
c) How would your answer change if the elevator were moving down at 4.0m/s for 5.0s ?!
I am getting 6082.2 instead of 1200J for both help please
Answers
Answered by
Damon
constant speed means no acceleration
F = m g = 608 N
W = force * distance = 608*4*5
= 12,164 Joules
same but force opposite to motion for gravity -12,164
signs reverse if going down
F = m g = 608 N
W = force * distance = 608*4*5
= 12,164 Joules
same but force opposite to motion for gravity -12,164
signs reverse if going down
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