15. Rotational Equilibrium

Equilibrium with Multiple Objects

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

Practice Problem: Torque on a Mobile

The Saffold

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-prd.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-prd.pearsonprd.tech/courses/physics/thumbnails/images/6466757a"alt=""/>

Physics, Torque (3 of 13) Balance Beam

Multiple objects hanging

The system in the figure is in equilibrium with the string

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

Position of second kid on seesaw

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