The advertisement for a new shoe promises runners less slip. The coefficient of friction (μ) between concrete and a new material used in the sole of this shoe is 1.5. The force of friction that causes slip is equal to mg sinθ, where m is a runner’s mass and g is the acceleration due to gravity. The force that prevents slip is μmg cosθ.
Write an equation to find the angle at which a shoe with a coefficient of friction of 1.3 will slip.
At what angle will this shoe start to slip?
52.4 deg
57 deg
66.2 deg
77 deg
Suggest how the new shoes might improve Mukisa's performance.
2 answers
Scroll down. I just answered this.
This is a different problem. Same thing but a different problem