Answer:
D. Velocity of the car
Step-by-step explanation:
The centripetal force acting on the car is given by the following formula:
(1)
m: mass of the car = 888 kg
v: tangential speed of the car = 7 m/s
r: radius of the flat circular track = 59 m
By the form of the equation (1) you can notice that the greatest change in the centripetal force is obtained when the velocity v is twice. In fact, you have:
![F_c=m((2v)^2)/(r)=4m(v^2)/(r)=4F_c](https://img.qammunity.org/2021/formulas/physics/college/q9mo3hhmo9cbipymukmm4z36ubnouh2h8z.png)
Then, the greatest values of the centripetal force is:
![F_c=4(888kg)((7m/s)^2)/(59m)=2949.96N](https://img.qammunity.org/2021/formulas/physics/college/71bjt7im2x8yjbqaz7xzlkkldx3d4ztu74.png)
The greatest change in Fc is obtained by changing the value of the speed
answer
D. Velocity of the car