Static Equilibrium

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Questions

• How is static equilibrium formed?
• Does the sum of the external torques on the rigid object have to equal zero in static equilibrium?
• Are forces on a rigid object summing to zero in static equilibrium?
• What is tension force in static equilibrium?
• What is net force in static equilibrium?
• How does friction force act in static equilibrium?
• What are some examples of static equilibrium?
• Why does the location of the center of gravity depend on how an object’s mass is distributed?
• An arbitrarily shaped piece of plywood can be suspended from a string attached to the ceiling. How could you use a plumb bob to find its center of mass?
• When is the net torque acting on an object zero, and yet the net force is nonzero?
• What are the conditions for a system to be in static equilibrium?
• How does static equilibrium work in the body?
• Can an object be in equilibrium if it is in motion?
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• What is an example of an object that has balanced forces acting on it?
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• How would you calculate the magnetic field in the following places: 33cm to the north of the wire? 230mm to the south of the wire? 880μm below the wire? 0.18m above the wire?
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• What is the equilibrium rule?
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• A rigid body in the shape of a 'V' has two equal arms made of uniform rods. What must be the angle between the two rods so that when the body is suspended from one end, the other end is horizontal?
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• A uniform rectangular trapdoor of mass #m=4.0kg# is hinged at one end. It is held open, making an angle #theta=60^@# to the horizontal, with a force magnitude #F# at the open end acting perpendicular to the trapdoor. Find the force on the trapdoor?