Homework Answers
here,
length of beam , l = 10 m
the net torque about the fulcrum , T = 100 * 6 * 9.81 + 50 * 3 * 9.81 - 200 * (10 - 6) * 9.81
T = - 490.5 N.m
the moment of inertia , I = 100 * 6^2 + 50 * 3^2 + 200 * (10 -6)^2
I = 7250 kg.m^2
the magnitude of angular acceleration , alpha = T /I
alpha = 0.068 rad/s^2
the direction is in CLOCKWOSE DIRECTION
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