Sliding Friction on a Wheel: How Does Static Friction Prevent Motion?

AI Thread Summary
Static friction opposes the motion of a wheel at the point of contact with the ground, acting only when the wheel is about to move. If a wheel has both linear and angular velocity, kinetic friction would typically apply; however, if the wheel is turning without slipping, static friction is relevant. The relationship between linear and angular velocity determines whether the wheel is sliding or rolling without slipping. When there is no slippage, the point of contact remains motionless, justifying the use of the static friction coefficient. Understanding these dynamics is crucial for analyzing the forces at play in wheel motion.
DZABHINAV
Messages
7
Reaction score
0
How is a sliding wheel is opposed by static friction?
Static friction acts only when the body is about to move.
My point is
if the wheel is has a linear velocity and angular velocity than kinetic friction should act on the body rather than static friction.
 
Physics news on Phys.org
DZABHINAV said:
How is a sliding wheel is opposed by static friction?
Static friction acts only when the body is about to move.
My point is
if the wheel is has a linear velocity and angular velocity than kinetic friction should act on the body rather than static friction.

Look at the point where the wheel contacts the ground. Is the wheel turning without slipping? That is, is the linear velocity just related to the angular velocity and the radius? Or is the wheel sliding on the ground as well as rotating? If there is no slippage, you would use the static friction coefficient.
 
that means cause the point of contact is motionless, we call it static friction.
thanks a lot.
 

Thread 'Derivation of Hamilton's Principle: Questions'

I have recently been really interested in the derivation of Hamiltons Principle. On my research I found that with the term ##m \cdot \frac{d}{dt} (\frac{dr}{dt} \cdot \delta r) = 0## (1) one may derivate ##\delta \int (T - V) dt = 0## (2). The derivation itself I understood quiet good, but what I don't understand is where the equation (1) came from, because in my research it was just given and not derived from anywhere. Does anybody know where (1) comes from or why from it the...
View full post »

Similar threads

B Static friction needed for rolling without slipping
Replies
4
Views
2K
I Direction of friction of each wheel and total moment when a car turns
Replies
6
Views
2K
B Friction and Newton's laws in car braking systems
Replies
10
Views
2K
B Why is static friction necessary for pure rolling?
Replies
4
Views
3K
B Are frictional forces action forces or reaction forces?
Replies
14
Views
1K
B How does the front wheel have no friction?
Replies
27
Views
3K
I Solving Wheel Coming to a Stop: FBD, Friction & Hysteresis
Replies
22
Views
4K
Rolling friction and static friction....
Replies
2
Views
2K
I Determine if the block will slide or flip over after contact
Replies
8
Views
2K
I Understanding Net Internal Torque and Kinetic Friction in a System
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top