The following equation was obtained by solving a physics problem:
The best physical representation of the situation is
A)A car traveling at 16.0 m/s is 19.2° into a turn of a quarter circle on a level road.
B)A mass on a string that is originally horizontal has fallen to where the angle between the string and the vertical direction is 19.2°.
C)A mass on a string originally horizontal has fallen 19.2° from the horizontal direction.
D)A car traveling at 16.0 m/s is on a circular curve banked at 19.2°.
E)A car traveling at 16.0 m/s and going over a semicircular mountain-top road is 19.2° down from the top.

Question

The following equation was obtained by solving a physics problem: 
The best physical representation of the situation is
A)A car traveling at 16.0 m/s is 19.2° into a turn of a quarter circle on a level road. 
B)A mass on a string that is originally horizontal has fallen to where the angle between the string and the vertical direction is 19.2°. 
C)A mass on a string originally horizontal has fallen 19.2° from the horizontal direction. 
D)A car traveling at 16.0 m/s is on a circular curve banked at 19.2°. 
E)A car traveling at 16.0 m/s and going over a semicircular mountain-top road is 19.2° down from the top.

Quizplus · Accepted Answer

The equation obtained from the physics problem involves solving for the banking angle of a circular curve given the radius, velocity, and coefficient of static friction. This scenario is best represented by choice D, which describes a car traveling at 16.0 m/s on a circular curve that is banked at 19.2°. The other choices involve scenarios that do not involve circular motion, or do not match the specific variables and values given in the equation obtained from the problem.

The Following Equation Was Obtained by Solving a Physics Problem