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Results tagged with Search options user 78230

The resistance a surface or object encounters when moving over another.

0
votes
Your assumption that the ball will be faster if it rotates faster has a very logical explanation and is completely valid. If your ball has a circumference C it will cover that distance with each rotat …
answered Apr 19 '15 by Jaywalker
2
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The definition of force is under the assumption that there is no friction involved in the system. This means you can imagine the surface it is measured on as some kind of "super slippery ice" that … different frictional forces. Since in your scenario, the net force determines the acceleration, a greater force is needed to counteract a larger friction to produce the same acceleration. …
answered Oct 2 '15 by Jaywalker
5
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As you may know, the friction is proportional to the normal force of an object or in this case the force of attraction between magnet and refrigerator. If your force is strong enough then the … friction will be sufficient and the magnet will not slip (on earth the force of friction must exceed the mass of your magnet multiplied by 9.81 m/s). If we assume your magnet weighs 0.010kg and is made of …
answered Apr 21 '15 by Jaywalker
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Gravity does not ignore the mass because the mass of the balls actually provides some of the gravitational pull. Their masses are do small however that they have little effect on the force of gravity. …
answered Oct 27 '15 by Jaywalker
3
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The force of friction acts both towards the centre of the circle and opposite the velocity vector of the car. Strictly speaking, the diagram you have does not show all forces acting on the car but it …
answered May 25 '16 by Jaywalker
0
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I am sorry to say this but surface area is not proportional to the force of friction. Friction is given by the coefficient of friction (static or kinetic) multiplied by an objects normal force. What … may ne useful is the theory that the coefficient of friction is equal to the tangent of the angle at which an object starts to move on a plane. Also something that you might want to watch out for is …
answered Apr 20 '15 by Jaywalker