The Forces of Friction

Physics - Mechanics: Friction & Forces at Angles - Horizontal Surface
Example:
Find the maximum force pushed at 30 degrees on to a 5kg box on a horizontal surface with a static friction of 0.4 before the box starts moving.

Physics - Mechanics: Friction & Forces at Angles - Horizontal Surface
Example:
Find the acceleration when a force = 50N is pushed at 30 degrees on a 5kg box on a horizontal surface with a kinetic friction of 0.4.

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Physics - Mechanics: Friction & Forces at Angles - Horizontal Surface
Example:
Find the acceleration when a force = 50N is pulled at 30 degrees on a 5kg box on a horizontal surface with a kinetic friction of 0.3..

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Physics - Mechanics: Friction & Forces at Angles - Horizontal Surface with 2 Blocks
Example:
Find
a) the maximum force pushed at 30 degrees on to a 3kg on top of a 5kg box on a horizontal surface with frictions of 0.4 and 0.2, respectively, before the top box starts moving
b) the acceleration of the 2 boxes.

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Physics - Mechanics: Friction & Forces at Angles - Inclined Plane - No Friction
Example:
Find the acceleration when a force = 60N is pushed horizontally on a 5kg box on a frictionless 30 degree incline surface.

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Physics - Mechanics: Friction & Forces at Angles - Inclined Plane - with Friction
Example:
Find the acceleration when a force = 60N is pushed horizontally on a 5kg box on a frictionless 30 degree incline surface with a kinetic friction of 0.2.

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Physics - Mechanics: Friction & Forces at Angles - Inclined Plane - No Friction
Example:
Find the acceleration when a force = 100N is pushed at 20 degree on a 5kg box on a frictionless 30 degree incline surface.

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Physics - Mechanics: Friction & Forces at Angles - Inclined Plane - with Friction
Example:
Find the acceleration when a force = 100N is pushed at 20 degree on a 5kg box on a frictionless 30 degree incline surface with a kinetic friction of 0.1.

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