THE PRACTICE STUDIO
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PRACTICE / Static equilibrium
A couple changes the support share
A uniform 2 m horizontal beam weighs 60 N and rests on simple supports at both ends. A further downward load of 20 N acts 0.50 m from the left end. An applied counterclockwise couple has magnitude 10 N·m.
What is the upward reaction at the right support?
Organize the givens & assumptions
- Beam weight: 60 N at midpoint
- Extra load: 20 N at x=0.50 m
- Counterclockwise couple: 10 N·m
Static equilibrium in a vertical plane; supports exert upward forces only; the couple adds torque but no net force.
- A
- B
- C
- D
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