Secret Finance

natashah asked:


Consider a wet banked roadway, where there is a coefficient of static friction of 0.30 and a coefficient of kinetic friction of 0.25 between the tires and the roadway. The radius of the curve is R=50 m.

1.) If the banking angle is theta=25 degrees, what is the maximum speed the automobile can have before sliding up the banking?

2.)
What is the minimum speed the automobile can have before sliding down the banking?

Thank you so much to whoever solves this problem!

brett h asked:


Find the required banking angle for a curve of radius 400.0 m of the curve is to be negotiated at a speed of 60.0 km/hr without the need of a friction force.

brett h asked:


Find the required banking angle for a curve of radius 400.0 m of the curve is to be negotiated at a speed of 60.0 km/hr without the need of a friction force.

JK asked:


This is a physics problem.

Hello, I am doing this topic for my physics project. The topic is on the luge tracks. In order to find the optimal banking speed, we came up with using the formula:
tan(angle)= v^2/rg
This would require us to know the angle and the radius.
My question is: is this the correct way to find the optimal banking speed? In addition, I am convinced that there is no such thing as “optimal banking speed.”

Joel G asked:


This is refering to physics, circular motion

I don’t understand how banking the circular track has an advantage.

Could someone tell me why?

chelsea asked:


I recently bought a magnetic card case to carry my credit cards and it seems that the magnet is destroying my credit cards. I had a case exactly like this (same brand, same type) before and the magnets never did this before. Is there anything I can do?

I already wrote the company that makes the card case and they were no help at all.