grade 12 physics questions (friction)
1) which kind of friction is greater and why? (i know its static, just need an explanation)
2) when friction is measured on a ramp at an angle, what trigonometric quantity is the coefficient of friction equal too? prove it with a free body diagram
3) what is the relation between friction and mass for a horizontal surface?
please help. i really have no idea on number two and i kind of get number three
March 20, 2011