- #1
MalayInd
- 33
- 0
I was wondering about these questions. Please guide me.
1) We cannot drive a car on ice because there is no force on the car which acts horizontally. It means that when we press the accelertor, we provide only the rotational motion to the wheels. Now, when we drive on a road, friction provides the necessary force to enjoy the drive. We can have different accelerations while driving the car. How is it possible when the same force of friction is responsible for different accelerations?
2)Contact force between two surfaces is divided into two components, namely force of frictions and normal reation. Why the contact force is neither horizontal nor vertical but oblique to the surface?
3)Why the limiting friction(betwween two given surfaces) is dependent on the normal reaction?
4)Why does the value of coefficient of friction(ratio of force of friction to normal reaction) mostly remain less than 1?
Keep Smiling
Malay
1) We cannot drive a car on ice because there is no force on the car which acts horizontally. It means that when we press the accelertor, we provide only the rotational motion to the wheels. Now, when we drive on a road, friction provides the necessary force to enjoy the drive. We can have different accelerations while driving the car. How is it possible when the same force of friction is responsible for different accelerations?
2)Contact force between two surfaces is divided into two components, namely force of frictions and normal reation. Why the contact force is neither horizontal nor vertical but oblique to the surface?
3)Why the limiting friction(betwween two given surfaces) is dependent on the normal reaction?
4)Why does the value of coefficient of friction(ratio of force of friction to normal reaction) mostly remain less than 1?
Keep Smiling
Malay