Car moving at 10 m/s A car moving at 10.0 m/s encounters a bump that has a circu
ID: 1970179 • Letter: C
Question
Car moving at 10 m/sA car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump?
200 N
389 N
789 N
589 N
A car moving at 10.0 m/s encounters a depression in the road that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the bottom of the depression?
200 N
389 N
789 N
589 N
Explanation / Answer
1.
We have,
Normal Force = N = mg - mv^2/R = 60 x 9.8 - 60 x 10^2/30 = 388 Newton
Option- B ic correct !!
2.
Normal Force = mg + mv^2/R = 60 x 9.8+ 60 x 10^2/30 = 788 Newtons
option - C is correct !!!