A horizontal conveyor belt is running with constant speed V=3.0m/s. A small disk enters the horizontal velocity Vo=4.0 m/s perpendicular to the velocity of the belt . Coefficient of friction between the disk and the belt is 0.5. Q1.What should be the maximum width of the belt so that disk does not fall it? Q2.What is the minimum speed of the disk relative to the reference frame fixed with the ground?

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.