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### Static Equilibrium

• A force, applied to a body at a given point, produces a torque about another point O. The magnitude of the torque about O is equal to the product of the force and the perpendicular distance of the force from O.
• A body is in static equilibrium if (a) the net force on the body is zero, and (b) the net torque on the body is zero.
• In solving problems on static equilibrium, simplification is obtained if a judicious choice is made of the point O, about which torques are calculated.

### Static Equilibrium

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

• Intro 0:00
• Torque 0:09
• Introduction to Torque
• Rod in X-Y Direction
• Particle in Equilibrium 18:15
• Particle in Equilibrium, Net Force=0
• Extended Object Like a Rod
• Conditions of Equilibrium
• Forces Acting on Object (Proof of Torque)
• The Lever 35:38
• Rod on Lever with Two Masses
• Standing on a Supported Beam 40:53
• Example : Wall and Beam Rope Connect Beam and Wall
• Net Force
• Net Torque
• Finding ø