Banked Curves and Static Frictional Components

AI Thread Summary
The discussion centers on the mechanics of tire friction in banked curves. It clarifies that while the part of the tire in contact with the ground is relatively stationary, the friction acts in both tangential and vertical directions. When a car moves in a circle at constant speed, the tangential component of static friction is zero, as there is no acceleration in that direction. This understanding is crucial for calculating centripetal acceleration and friction forces in circular motion. The conversation emphasizes the importance of recognizing the different components of friction when analyzing vehicle dynamics.
Starwing123
Messages
4
Reaction score
0
The part of the tire on the ground of a moving car is relatively stationary compared to the ground, right? The way the wheels work is the friction parallel to the direction of movement right? So when we calculate centripetal acceleration for cars going in a circle and the friction forces, why do we not have two components of friction?
 
Physics news on Phys.org
Starwing123 said:
The part of the tire on the ground of a moving car is relatively stationary compared to the ground, right? The way the wheels work is the friction parallel to the direction of movement right? So when we calculate centripetal acceleration for cars going in a circle and the friction forces, why do we not have two components of friction?

The blue sentence is not true. When the car travels along a circle, the friction can act against slipping both in tangential direction, along the circle, and also up or down along the slope, although the tangential component of static friction is zero when the car moves with uniform speed.

ehild
 
Last edited:
Oh, Thanks! I didn't realize that the tangential friction is 0 b/c the car is moving at a constant speed.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Why is the direction of kinetic/static friction up a ramp?
Replies
7
Views
1K
Direction of static friction between a vehicle and circular dome
Replies
9
Views
2K
Static Friction Between a Box and the Floor
Replies
11
Views
3K
Car turning and centripetal force
Replies
18
Views
3K
How can we model a rolling truck on an incline using rotational motion analysis?
Replies
24
Views
2K
Is it friction or tension acting on the person hanging on a rope?
Replies
4
Views
1K
Direction of friction on rolling object
Replies
30
Views
3K
Question about car braking and tire friction
Replies
19
Views
3K
Static friction coefficient for a crate in the back of a truck
Replies
6
Views
2K
Centripetal Force Banked Curves
Replies
12
Views
2K

Hot Threads

Recent Insights

Back
Top