- #1
R Power
- 271
- 0
Hi friends
Let me talk in context of cars wheels...
See!, tractive force is what ground offers us depending upon the weight of wheels or particularly car. It is the maximum force that ground offers us opposite to the force we apply to ground in the form of torque(t=rxf)... if we aplly more torque(or force) than that, we will create a wheel slip. So this tractive force is then the friction having it's max value= u x Rn(normal reaction)...This is what atleast i imagined and found on googling too...
But then what is rolling resistance? ... when i googled or saw in my textbooks i found simply it's resistance to rolling it is what due to which a wheel stops and it is also in opposite to direction of wheel spin or we can say in same direction of car moves....actually we can't say it rolling resistance because it is what helps a wheel roll...it's better we say it rotating resistance that's why when we release the gas pedal the torque decreases and decreases and finally becomes 0 due to rotating resistance . This also has direction opposite to wheel spin or same as that of car direction i.e same as that of tractive force...
Actually rotating resistance(or rolling res if u want to say) is what makes a wheel roll as long as we apply torque and same stops the wheel when we stop applying torque!
Then what is difference between these two terms.........?
Plz help me...
Let me talk in context of cars wheels...
See!, tractive force is what ground offers us depending upon the weight of wheels or particularly car. It is the maximum force that ground offers us opposite to the force we apply to ground in the form of torque(t=rxf)... if we aplly more torque(or force) than that, we will create a wheel slip. So this tractive force is then the friction having it's max value= u x Rn(normal reaction)...This is what atleast i imagined and found on googling too...
But then what is rolling resistance? ... when i googled or saw in my textbooks i found simply it's resistance to rolling it is what due to which a wheel stops and it is also in opposite to direction of wheel spin or we can say in same direction of car moves....actually we can't say it rolling resistance because it is what helps a wheel roll...it's better we say it rotating resistance that's why when we release the gas pedal the torque decreases and decreases and finally becomes 0 due to rotating resistance . This also has direction opposite to wheel spin or same as that of car direction i.e same as that of tractive force...
Actually rotating resistance(or rolling res if u want to say) is what makes a wheel roll as long as we apply torque and same stops the wheel when we stop applying torque!
Then what is difference between these two terms.........?
Plz help me...