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Published byKimberly Stafford Modified over 5 years ago
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Any vector can be resolved into two components at right angles to each other.
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In practice we are given an angle (generally from the horizontal or vertical) and we use trigonometry 20N 20 sin 300N 300 20 cos 300N
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THE FRICTIONLESS INCLINED PLANE
Normal Force The component of gravity pushing down the plane Component of gravity equal and opposite Normal Force Weight θ
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The weight force forms the hypotenuse of a right angled triangle
The weight force forms the hypotenuse of a right angled triangle wcos is the component of the weight force equal to the normal force but opposite in direction w cos w w sin wsinθ is the component of the weight force pushing the block down the ramp
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With Friction If the block is not moving or is moving at steady speed the friction force = wsinθ Normal Force Friction wcos If the block is accelerating the friction force is smaller than wsinθ wsinθ wcos
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