15. Rotational Equilibrium

Equilibrium with Multiple Objects

The system in the figure is in equilibrium with the string

Practice Problem: Torque on a Mobile

The Saffold

Equilibrium with Multiple Objects: Example: Position of second kid on seesaw

A 20 kg, 5 m-long bar of uniform mass distribution is attached to the ceiling by a light string, as shown. Because the string is off-center (2 m from the right edge), the bar does not hang horizontally. To fix this, you place a small object on the right edge of the bar. What mass should this object have, to cause the bar to balance horizontally?<img src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/5bdcb4af"alt=""/>

Equilibrium with Multiple Objects: Example: Multiple objects hanging

Two kids (m,LEFT = 50 kg, m,RIGHT = 40 kg) sit on the very ends of a 5 m-long, 30 kg seesaw. How far from the left end of the seesaw should the fulcrum be placed so the system is at equilibrium? (Remember the weight of the seesaw!)<img src="https://static.studychannel.pearsonprd.tech/courses/physics/thumbnails/images/6466757a"alt=""/>

Physics, Torque (3 of 13) Balance Beam

Multiple objects hanging

Physics, Torque (13 of 13) Static Equilibrium, Mobile Calculations

Position of second kid on seesaw

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