H2 Physics 2 - Forces and Moments: Equilibrium of a Beam

What you will learn

• Uniform 2 m, 40 N beam on two supports: A at the left end and B at 1.5 m, with a 60 N load at the right end.
• Translational equilibrium: R_A + R_B = 40 + 60 = 100 N, one equation in two unknowns.
• Moments about A: R_B(1.5) = 40(1.0) + 60(2.0), so R_B is about 107 N.