Question

Rearrange this equation to solve for the angle of refraction (θr):

n1 · sine(θi) = n2 · sine(θr)

Answer 1

Answer:

R= Normal reaction by the elevator floor on the passenger

a= Acceleration of elevator upward

mg= Weight of passenger

Using Newton's 2nd law,

R−mg=ma

⇒R=m(g+a)

Force by the passenger on the elevator floor is same as R by Newton's 3rd law.