D
deleted783484
The question asks: "If a person starts at the rim of a spinning platform and is pushed radially toward the central axis by a moving exterior wall, then what happens to the normal force felt by that person due to the wall?"
Answer is: "It decreases, since r decreases"
I used a= v^2/r but TBR used w^2*r. How do we know which to use? And are they using newton's second law Fnet= ma to say that since a decreases Fn decreases as well?
Thank you!
Answer is: "It decreases, since r decreases"
I used a= v^2/r but TBR used w^2*r. How do we know which to use? And are they using newton's second law Fnet= ma to say that since a decreases Fn decreases as well?
Thank you!