All Questions
89
questions
0
votes
1
answer
50
views
Calculating vehicle and tire acceleration with tire slipping
I'm attempting to simulate the motion of a vehicle with $N$ tires and I'm running into some trouble deriving forces/acceleration when adding friction and tire slipping into the picture. Here's an ...
- 103
0
votes
2
answers
73
views
Forces accelerating a tire
I'm attempting to write a little vehicle simulator and I'm working on calculating vehicle linear acceleration and tire angular acceleration. I'm trying to add in tire slipping and I'm having trouble ...
- 103
0
votes
0
answers
47
views
When a wheel begins to roll on a flat surface, is it due to fulcrum generated at the contact point by friction?
[Edit: What I'm trying to understand is how any wheel rolls on a surface, instead of just spinning in place. I know that friction provides the force to make the wheel roll, but I'm unsure about the ...
- 1
0
votes
0
answers
23
views
Finding the torque required to turn a cart resting on 4 wheels
I am building a cart that has two handles on the bottom face. The cart is basically a table resting on castor wheels, one on each leg. If I apply a couple on the handles, the cart will turn. I am ...
0
votes
2
answers
78
views
Horizontal forces of a wheel that is rolling and slipping while subjected to a coupled moment?
I am trying to understand what's going on with this problem:
I summed the forces in the $x$-axis, which is horizontal, and I thought the moment would create a force opposing the friction force. ...
- 1
18
votes
9
answers
8k
views
Where does "excess" energy go when a vehicle uses a lower gear to move at a given speed?
So I understand that a lower gear as advantageous when accelerating a vehicle or when driving up hill (e.g because you are having to accelerate against gravity). I know this is because of the ...
- 191
17
votes
8
answers
7k
views
Why is it possible to keep an object, say a book, horizontal while holding its corner?
When holding a book from its corner with two fingers in a pinched position, the fingers act as a sort of hinge, and the book is free to rotate about this corner only. The external forces acting on the ...
- 349
0
votes
0
answers
28
views
Equations for Torque Capacity and Bolt Clamping
I am doing research into how I can best approximate the torque capacity of several components bolted together in an assembly and specifically when a pattern of bolts is holding several parts together ...
0
votes
2
answers
68
views
Can the brakes of a Semi-trailer truck overcome the torque of the engine? [closed]
On the average Semi-trailer truck, assuming an average load, can the engine overcome the brakes and continue spinning the wheels despite the operator applying the brakes fully?
This would be assuming ...
- 101
0
votes
1
answer
295
views
Minimum torque required to turn a large gear
I want to preface this by saying that this isn't homework, it's just a question I've made up myself (so it could just be impossible to solve), and I am a beginner so apologies if I miss something ...
- 15
0
votes
1
answer
328
views
Static friction and torque on decelerating wheel
I want to understand how static friction work when wheel is decelerating, it will increase torque or it will decrease torque of wheel? On picture I show how I understand it works(sorry for quality of ...
0
votes
2
answers
459
views
Role of static friction in rolling
I am confused as to how does static friction (analytically) causes rolling motion.
As far as i understand
For causing a rigid body to rotate about its centre of mass a torque must displace angularly, ...
- 5
0
votes
1
answer
61
views
Sum of torques acting on car wheels
lets say we have a car parked on a slope and its in balance. There is a torque acting on the wheels pointing down, therefore there needs to be another force which causes a torque pointing up in order ...
- 3
14
votes
3
answers
2k
views
Can the value of friction force ever exceed value of applied force?
My teacher taught me that the value of friction force can never be greater than the applied force. But recently, when I was studying rotational motion, I got a dilemma…
Suppose I made a stand (from ...
- 444
1
vote
5
answers
587
views
Traction Torque Effect On A Rotating Wheel [closed]
In the figure is shown an electric-car's wheel . If we made a dynamic force analysis to this wheel (which is considered to rotate in the anti-clockwise direction) ; We will find that a traction force ...
- 113