Question

A physics Brady Bunch, whose weights in newtons are indicated in the figure, is balanced on a seesaw. What is the number of the person who causes the largest torque about the rotation axis at fulcrum f directed (a) out of the page and (b) into the page?

Answer 1

Considering the given figure 220 330 440 560 560 440 330 220 newtons 4 320 23 4meters Consider the formula of toque, τ Here r is the distance of child f is thefulcrum Torque on 1s child, xi-220x4-880 Nm Torque on 2nd child, i- ng-330x3-990 Nm Torque on 3rd child, x-440x2 880 Nm Torque on 4th child,傘左媛=560 xl-S60 Nm Torque on 5th child, T-x 560x-1560 Nm Torque on 6th child, -x440x-2880 Nm Torque on 7th child, xr, = 330 x-3-990 Nm Torque on 8th child,-,-G x's = 220 x-4 =-880 Nm

To calculate the largest torque about the rotation axis at fulcrum, f directed out of the page consider the above values. The largest torque about the rotation axis at fulcrum, f directed out of the page is at 2 child To calculate the largest torque about the rotation axis at fulcrum, f directed into the page consider the above values The largest torque about the rotation axis at fulcrum, f directed into the page is at 7th child.