B2 Equilibrium of Forces and Torques

This section expands upon the ideas of mechanical equilibrium, and shows how they are applied in a variety of physical systems.

Articles
Image	Title
	B2-01: SUM OF FORCES IN A LINE Demonstrate that forces in one dimension add algebraically
	B2-02: SUM OF FORCES - SPRING SCALES Show that the sum of forces exerted on the mass by the scales is constant
	B2-03: EQUILIBRIUM OF FORCES - INCLINED PLANE Demonstrate equilibrium of forces
	B2-04: VERTICAL FORCES - FOUR SPRING SCALES Show addition of forces along a line
	B2-11: EQUILIBRIUM OF FORCES - OHAUS PROJECTION Demonstrate equilibrium of forces
	B2-12: EQUILIBRIUM OF FORCES - BOARD BACKGROUND Demonstrate equilibrium of forces
	B2-14: SUM OF FORCES - LARGE ROPE VERSION Develop a feel for equilibrium of forces on a large scale
	B2-16: VECTOR ADDITION WITH ROPE AND STUDENTS Demonstrate vector addition of forces
	B2-21: CONCEPT OF TORQUE - TORSIONAL CHAIR Introduce the concept of torque
	B2-22: TORQUE - PHYSICAL DEFINITION Introduce the concept of torque
	B2-23: TORQUE CONDITION FOR EQUILIBRIUM Demonstrate that equilibrium of forces is an insufficient condition for static equilibrium
	B2-31: EQUILIBRIUM OF TORQUES - WHEELS AND AXLES Demonstrate equilibrium of torques
	B2-32 EQUILIBRIUM OF TORQUES - LARGE Demonstrate balanced torques
	B2-33: EQUILIBRIUM OF TORQUES - SMALL Demonstrate equilibrium of torques
	B2-34: EQUILIBRIUM OF TORQUES - ANGLE BRACKET Verify the equation for torques when the center of mass is outside the object
	B2-35: EQUILIBRIUM OF TORQUES ON METERSTICK Demonstrate equilibrium of torques
	B2-36: EQUILIBRIUM OF TORQUES ON METERSTICK - ROTATORS Demonstrate equilibrium of torques
	B2-41: ROBERVAL BALANCE Demonstrate a paradox in equilibrium of forces and torques
	B2-42: ARM MODEL Model the forces occurring in the arm
	B2-43: CRANE BOOM Demonstrate a crane boom