Explanation:
It is given that,
Speed of the sports car, v = 85 mph = 37.99 m/s
The radius of curvature, r = 525 m
Let
is the normal weight and
is the apparent weight of the person. Its apparent weight is given by :
![W_A=mg-\dfrac{mv^2}{r}](https://tex.z-dn.net/?f=W_A%3Dmg-%5Cdfrac%7Bmv%5E2%7D%7Br%7D)
So, ![\dfrac{W_A}{W_N}=\dfrac{mg-\dfrac{mv^2}{r}}{mg}](https://tex.z-dn.net/?f=%5Cdfrac%7BW_A%7D%7BW_N%7D%3D%5Cdfrac%7Bmg-%5Cdfrac%7Bmv%5E2%7D%7Br%7D%7D%7Bmg%7D)
![\dfrac{W_A}{W_N}=\dfrac{g-\dfrac{v^2}{r}}{g}](https://tex.z-dn.net/?f=%5Cdfrac%7BW_A%7D%7BW_N%7D%3D%5Cdfrac%7Bg-%5Cdfrac%7Bv%5E2%7D%7Br%7D%7D%7Bg%7D)
![\dfrac{W_A}{W_N}=\dfrac{9.8-\dfrac{(37.99)^2}{525}}{9.8}](https://tex.z-dn.net/?f=%5Cdfrac%7BW_A%7D%7BW_N%7D%3D%5Cdfrac%7B9.8-%5Cdfrac%7B%2837.99%29%5E2%7D%7B525%7D%7D%7B9.8%7D)
![\dfrac{W_A}{W_N}=0.719](https://tex.z-dn.net/?f=%5Cdfrac%7BW_A%7D%7BW_N%7D%3D0.719)
or
![\dfrac{W_A}{W_N}=71.9\%](https://tex.z-dn.net/?f=%5Cdfrac%7BW_A%7D%7BW_N%7D%3D71.9%5C%25)
Hence, this is the required solution.
Answer:
The constriction causes the mercury column to break under tension, leaving a vacuum between the bottom of the column and that in the bulb, and the top of the column stays still at the position reached in the body - a "peak hold" system.
Uhhh I’m not really sure of the answer i think it’s stratosphere