A 10 m beam of mass 314 kg extends over a ledge. The beam is not...
A 10 m beam of mass 314 kg extends over a ledge. The beam is not attached, but simply rests on the surface. A 69 kg student intends to position the beam so that he can walk to the end of it. How far from the edge of the ledge can the beam extend?
Homework Answers
Here ,
let the position from the edge extending is x
mass of beam , m = 314 Kg
mass of person , M = 69 Kg
just at the moment , when the beam is about to roll over
Balancing the moment about the edge
314 * (10/2 - x)* 9.8 - 69 * x * 9.8 = 0
solving for x
x = 4.1 m
the distance x is 4.1 m
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