The problem involves determining the minimum coefficient of static friction required for a person to maintain stability on an inclined driveway with a slope of 19 degrees. The context is rooted in the principles of forces acting on an incline, particularly focusing on static friction and normal force.
There is an ongoing exploration of the calculations involved, with participants questioning their assumptions about the forces and the correct application of trigonometric functions. Some guidance has been offered regarding the importance of angle measurement in calculations, but no consensus has been reached on the correct approach or solution.
Participants note potential errors related to the use of degrees and radians in their calculations, as well as the misunderstanding of the role of gravitational acceleration in determining the coefficient of static friction.
Degrees versus radians.emily081715 said:
i don't understand?haruspex said:
Did you plug the 19 degrees into the tan function of a calculator? It can probably be set to expect angles to be specified in degrees or radians, but you have to make sure you select the right one.emily081715 said:
haruspex said:
Why the 9.8? g is not part of the coefficient.emily081715 said:
well actually i know its incorrectemily081715 said:
so just tan (19)emily081715 said:
Yes.emily081715 said: