# What is Slipping: Definition and 220 Discussions

Slipping is a technique used in boxing that is similar to bobbing. It is considered one of the four basic defensive strategies, along with blocking, holding, and clinching. It is performed by moving the head to either side so that the opponent's punches "slip" by the boxer.

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15. ### Engineering Rigid wheel rolling without slipping -- Trying to find angular acceleration

So I tried the problem and it’s different from the solution. I’m confused on why my attempt didn’t work, is it because the wheel is undergoing general planar motion? I tried to just apply Newton’s 2nd law to find the acceleration of the centre and then use that to find angular acceleration. The...
16. ### Minimum length x for no slipping

I'm letting the weight of the hanger be W. Since there is no slipping, the total frictional force will be = total weight. When the load of 50W is placed at X, there'll be a normal force at the left end of the pole on top to the left, and another normal force at the right end of the pole at the...
17. ### Mechanics: A bowling ball is thrown and rolls with slipping

Summary:: A bowling ball is thrown on a bowling lane with the coefficient of friction ##\mu## with an initial velocity of ##v_0## and no rotation. After hitting the ground, it starts rolling with slipping. After how much time after hitting the lane will the ball stop slipping? What will be its...
18. ### Rolling with slipping and combined momentums

Summary:: combining angular and linear momentum when an impulse is aplied 2/3 of the radius from the center. A Jo-jo is lying on the ground on its edge. The central part (axel) has a radius of 2r and it’s side a radius of 3r. The string is protruding from the bottom of the axel (central part)...
19. ### MHB Man on ladder wishes to avoid the ladder slipping

A 6 m ladder weighs 350N and is placed with its lower end on a horizontal floor and its upper end against the wall. The angle between the wall and the ladder is 30°. A man weighing 900N is to climb to the very top of the ladder. The coefficient of friction between the floor and the ladder to...
20. ### Cylinder rolling without slipping on a truck

I don't know how to start it Is the truck who make the cylinder roll, initially? If yes, how? Since the truck force would pass by the center of the cylinder.
21. ### MHB Force when slipping and falling

Help me find the friction force when slipping/falling I already posted this question, but I needed to reword it and include more info. A 158 lb man runs on a horizontal wet surface at 3 mph before decelerating to 1.5 mph about 4 feet before a right turn. There are cement stairs at the turn...
22. ### Mathematically Modeling a Rolling Body with Slipping

Basically, I want to know if my assumptions and workings are correct. This is how I see this situation. First, I'm viewing this body as a series of disconnected points, like I have in this animation I made, modeling purely rolling motion. Modeling the body like that worked in that case, and...
23. ### Cylinder Rolling Down an Incline Without Slipping

First we let the static friction coefficient of a solid cylinder (rigid) be ##\mu_s## (large) and the cylinder roll down the incline (rigid) without slipping as shown below, where f is the friction force: In this case, ##mg\sin(\theta)## is less than ##F_{max}##, where ##F_{CM,max}## is the...

35. ### Ball rolls without slipping in an accelerating car

Homework Statement A bowling ball sits on the smooth floor of a subway car. If the car has a horizontal acceleration a, what is the acceleration of the ball? Assume that the ball rolls without slipping. Homework Equations torque = R x F = Iα aball= Rα Isphere = (2/5) MR2 The Attempt at a...
36. C

### Angular velocity of cylinders after slipping over each other

Homework Statement two cylinders of radii r1, and r2 having moments of inertia I1, and I2, about their respective axes. Initially, the cylinders rotate about their axes with angular speeds w1, and w 2 as shown in the figure. The cylinders are moved closer to touch each other keeping the axes...
37. ### Net Vertical Force on a Slipping Chain on a Table

Homework Statement Homework EquationsThe Attempt at a Solution The initial shape of chain is like an inverted "L" with end B just touching the floor . Height of table is "h" . My problem is in identifying the net force on the chain in vertical direction .At any instant of time there are...
38. T

### A thin disk rolls without slipping

Homework Statement A very thin disk of mass m and radius R rolls without slipping along a horizontal plane. The disk is constrained to remain vertical. Let ψ be the angle between the plane of the disk and the x-axis of a fixed frame and θ be the angle measuring spinning of the disk about its...
39. ### How Can I Calculate the Angular Speed of a Ring Rolling Without Slipping?

Homework Statement Homework Equations 3. The Attempt at a Solution These are my two observations for this problem . 1) Center of mass of the ring moves in a circle of radius (R-r) about point O . O is the center of the smaller circle in figure 2 . 2) From the geometry , the angular speed...
40. ### Rolling without slipping, theory

Homework Statement I am solving a question that asks for, what's the minimum coefficient of friction required for a cylinder to roll without slipping? Where the cylinder has a force F acting on its center. Homework Equations And The Attempt at a Solution From the way I understand it, the...
41. ### Normal force on slipping hemisphere

Homework Statement A hemispherical bowl of mass m and radius R is placed on a rough horizontal surface. Initially the centre C of the bowl is vertically above the point of contact with the ground(see figure). Now the bowl is released from rest. Find the normal force acting on the hemisphere...
42. ### Rolling cylinder or slipping cylinder reaches bottom first?

Homework Statement Two identical cylinders are released from the top of two identical inclined planes. If one rolls without slipping and the other slips without rolling then which one will reach the bottom first? How will their speeds compare when they reach bottom of incline? I am not sure if...
43. ### Slipping vs No Slipping Ball Race

The setup is a flat friction surface where the ball rolls without slipping. Next, in one case it goes up a friction incline, and in the other a frictionless incline. Which ball leaves the incline faster? Both are given the same initial push. At the bottom of the incline both balls have the same...
44. ### Slipping transitioning to rolling without slipping

Homework Statement A solid spherical ball of mass 0.75 kg and radius 5.0 cm is thrown onto a horizontal surface with coefficient of kinetic friction μ . It’s initial velocity at time t = 0 is horizontal and its initial angular velocity is zero. After rolling with slipping for a time t1 = 0.76...
45. ### Ball Rolling Without Slipping On A Turntable

Can someone please help me out with this tough problem? 1. Homework Statement A ball rolls on a turntable without slipping describe the balls motion in terms of (x,y) for a function of time. (The turntable spins at a constant rate) (This all the information that the professor gave us.)The...
46. ### Block slipping against two blocks

Homework Statement In the setup , block C remains at rest and block A move towards left when system is released . If velocity of A is 'u' towards left at an instant , what is the vertical component of velocity with which B descends .What is the horizontal component of velocity of B at this...
47. ### Rolling with slipping sliding friction....

I'm a bit confused. We all know that rolling with slipping is associated with kinetic friction. But Is that friction due to the traslational motion of the center of mass or just the spinning motion?If friction exists because of the translational motion, then in theory, I can slowly lower a...
48. ### Rolling Motion: With and Without Slipping

what is the different between rolling in a straight line without slipping and with slipping and which topic it take these type of motion
49. ### Calculating Slipping on an Inclined Plane: A Scientific Perspective

How can we calculate the slipping of an object down an inclined plane?
50. ### Torque Needs for Rotating Wheels Without Skid

If I have two wheels with a contact point connection when the one of the wheels is starting a rotation due to a certain torque which condition do the torque have to fulfill in order to: 1) starting the rotation 2) guarantee a rotation without skid My toughs for now are: 1) the torque has to...