static friction?

1 ⤊

the coefficient of static friction between hard rubber and normal street pavement is about .8. On how steep a hill (maximum angle) can you leave a car parked?

2006-10-26 21:29:04 · 3 answers · asked by Anonymous in Cars & Transportation ➔ Other - Cars & Transportation

3 answers

mgsin(a)-(coeff)mgcos(a)=0
mgsina=0.8(mgcosa)
tana=0.8
angle=tan(inverse)0.8
angle=38.6

see it was so easy.

2006-10-26 21:34:32 · answer #1 · answered by elvenprince 3 · 1⤊ 0⤋

you can park on pretty steep slopes but if you do park close to the curb and set your e brake and turn your wheels tward the curb so if it does start to roll it will catch the curb immediatly and stop

2006-10-27 10:06:43 · answer #2 · answered by Anonymous · 0⤊ 1⤋

45 with good tires

2006-10-27 04:31:46 · answer #3 · answered by Oscar 5 · 0⤊ 2⤋