- Contact force that is perpendicular to the surface that an object contacts - Supporting force exerted on an object that is in contact with another stable object -Perpendicular: 90° angle
2
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Formula
N = mg cosθ N: normal force m: mass of object g: acceleration due to gravity θ: angle of incline
3
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Units
Newtons (N)
4
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Scalar/Vector
Vector
5
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Location
-Base of catapult stays on the ground -Anywhere pieces of the catapult touch each other
6
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How it contributes to the catapult
- Catapult stays on the ground - The pieces of wood are held together - Keeps the ball from falling off the arm of the catapult