- #1

bd2015

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**Block on a Plane -- Friction problem**

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In summary, the problem involves a block on a plane with a frictionless table. The focus is on the interaction between the block and the wedge, where only the applied force on the block is of importance. Two values of the applied force must be solved for: one to prevent the block from sliding down and one to make it slide up. A free-body diagram must be drawn to identify all the forces acting on the block.

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bd2015

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edit: deleted

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- #2

tms

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You don't care in this problem about the interaction of the wedge and the table, since the table is frictionless. You care about the interaction of the wedge and the block, but even there you don't care about kinetic friction.

You have to solve for two different values of the applied force: one that will be just enough to keep the block from sliding down, and one that will be just less than enough to make the block slide up.

Start by drawing a free-body diagram to identify all the forces acting on the small block.

A block on a plane friction problem is a physics problem that involves calculating the forces acting on a block that is resting on an inclined plane. The main focus is on calculating the force of friction between the block and the plane.

The formula for calculating friction in a block on a plane problem is F = μN, where F is the force of friction, μ is the coefficient of friction, and N is the normal force exerted by the plane on the block. This formula is derived from the equation F = μmg, where m is the mass of the block and g is the acceleration due to gravity.

The direction of the force of friction in a block on a plane problem can be determined by considering the direction of the block's motion. If the block is sliding down the plane, the force of friction will be in the opposite direction, up the plane. If the block is sliding up the plane, the force of friction will be in the same direction, up the plane.

The force of friction in a block on a plane problem is affected by the coefficient of friction, the normal force, and the angle of incline of the plane. The coefficient of friction is a measure of how rough or smooth the surfaces of the block and plane are, while the normal force and angle of incline determine the magnitude and direction of the force of friction.

The force of friction can be minimized in a block on a plane problem by reducing the coefficient of friction, decreasing the normal force, or decreasing the angle of incline of the plane. In real-life situations, adding a lubricant between the block and plane can also help reduce friction.

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