jiwon
Oct4-09, 12:03 PM
1. The problem statement, all variables and given/known data
A 1500-kg car is dragged up a 20 degree rough ramp by a tow truck. The coefficient of static and kinetic friction between the car and the ramp are 0.8 and 0.5 respectively. Assume that wheels are locked.
*Note: picture of a sedan pulled up a ramp with a rope.
Find the tension in the tow rope:
a.) Just before car moves up the ramp.
b.) When the car moves up the ramp at a steady speed of 0.5 m/s.
c.) When car moves down the ramp at a steady speed of 0.5 m/s.
d.) The car is pulled up the ramp at an acceleration, a =0.2 m/s^2.
2. Relevant equations
Don't nkow i got these .
3. The attempt at a solution
mayb i started off with msintheta, so it'll be 15000kgsin20=5130N
1 a.) T=1600 and t+78.4
b.) 11946.4
c.) 4914.25
d.) 6736.08
I don' tknow if these answers are right. I'm just not sure on where to start on it. Any help on it is appreciated!
A 1500-kg car is dragged up a 20 degree rough ramp by a tow truck. The coefficient of static and kinetic friction between the car and the ramp are 0.8 and 0.5 respectively. Assume that wheels are locked.
*Note: picture of a sedan pulled up a ramp with a rope.
Find the tension in the tow rope:
a.) Just before car moves up the ramp.
b.) When the car moves up the ramp at a steady speed of 0.5 m/s.
c.) When car moves down the ramp at a steady speed of 0.5 m/s.
d.) The car is pulled up the ramp at an acceleration, a =0.2 m/s^2.
2. Relevant equations
Don't nkow i got these .
3. The attempt at a solution
mayb i started off with msintheta, so it'll be 15000kgsin20=5130N
1 a.) T=1600 and t+78.4
b.) 11946.4
c.) 4914.25
d.) 6736.08
I don' tknow if these answers are right. I'm just not sure on where to start on it. Any help on it is appreciated!