Answer to Question #304206 in Physics for Phil

Question #304206

A rigid plank 5.00 m long has mass 30.0 kg and supports a 75.0kg block 2.00 m from the left end. How much force is needed to support each end of the plank?

Expert's answer

"mg*2+Mg*2.5=R_B*5"

"R_B=441\\:\\rm N"

"R_A=mg+Mg-R_B=588\\:\\rm N"

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