Is Friction Necessary for Rolling Without Slipping?

  • Thread starter Thread starter andyrk
  • Start date Start date
  • Tags Tags
    Rolling
AI Thread Summary
Frictional force is necessary for rolling without slipping, especially when external forces like wind or gravity are present. On a frictionless surface, applying torque to a solid sphere will cause it to spin without translating linearly. Static friction arises when a body rolls without slipping, while kinetic friction occurs when there is slippage, leading to energy loss. In ideal conditions, rolling without slipping involves no energy losses, whereas slippage results in energy being converted into heat. Understanding these friction dynamics is crucial for analyzing motion in various physical scenarios.
andyrk
Messages
658
Reaction score
5
Is frictional force necessary for rolling without slipping? If yes then does that mean that if we provide torque to a solid sphere on a frctionless surface will it nor rotate? I didn't understand that when does static frction arise and when does kinetic friction arise when a body is rolling withoout slipping or with slipping. Any explanation would be of great help!
 
Physics news on Phys.org
andyrk said:
Is frictional force necessary for rolling without slipping?
It's required if there's another external force, such as wind, or gravity on a sloped surface. If there are no external forces, then the idealized friction force (no losses) is zero.

andyrk said:
If yes then does that mean that if we provide torque to a solid sphere on a frctionless surface will it not rotate?
It meas the sphere will spin without moving linearly.

andyrk said:
when does static frction arise and when does kinetic friction arise when a body is rolling withoout slipping or with slipping. Any explanation would be of great help!

Rolling without slipping - static friction force (or zero force), ideally, no energy losses.

Slippage of any kind - kinetic friction, some energy is being converted into heat.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'

Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is（Figure 2）： F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Question regarding Rolling with and without Slipping and Sliding
Replies
4
Views
2K
Friction Required for Billiard Ball to Roll without Slipping
2
Replies
60
Views
3K
Rolling without slipping problem
Replies
42
Views
3K
Why is the direction of kinetic/static friction up a ramp?
Replies
7
Views
1K
Acceleration of system related to rolling motion and pulley
Replies
35
Views
4K
Kinetic Energy of a Cylinder Rolling Without Slipping
Replies
21
Views
4K
Direction of friction on rolling object
Replies
30
Views
3K
Wooden sphere rolling on a double metal track
2
Replies
97
Views
5K
Cylinder Rolling Down an Incline Without Slipping
Replies
7
Views
4K
Motion of Sphere Rolling Down Rotating Cone
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top