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Ch 06: Intro to Forces (Dynamics)WorksheetSee all chapters

# Forces in 2D

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Sections
Newton's First & Second Laws
Types Of Forces & Free Body Diagrams
Forces & Kinematics
Vertical Forces & Acceleration
Vertical Equilibrium & The Normal Force
Forces in 2D
Equilibrium in 2D
Newton's Third Law & Action-Reaction Pairs
Forces in Connected Systems of Objects

Concept #1: 2D Forces in Horizontal Plane

Practice: Three horizontal forces act on a box (mass = 8 kg) sitting on a smooth surface. F1 is 30 N acting at 53° counterclockwise from the +x axis, F2 is 13 N acting at 67.4° clockwise from the +x axis, and F3 is 20 N directly along the -x axis. What are the magnitude and direction of the box's acceleration?

Concept #2: Solving an Unknown 2D Force

Concept #3: 2D Forces in Horizontal and Vertical Planes

Practice: You push a 5.1kg cart along the floor with an unknown force F at 30° below the horizontal. Using a scale, you know the Normal force is 70N. What is the horizontal acceleration of the cart?

Example #1: Wind Force on a Dropped Box