a) Brak is trying to close the door, but the big green guy wants to open it. Tha

Question

a) Brak is trying to close the door, but the big green guy wants to open it. That's why they're pushing from opposite sides as shown in the figure. Brak is pushing 0.580 m from the hinges with a force of 175-N, and the green fellow is pushing back with a force of 215 N. How far from the hinges is the alien pushing if the door doesn't move? m

WigglyTuff is standing near one end of a L = 2.7-m long
diving board with mass M = 20 kg as shown in the figure.
The other end of the board is bolted to the ladder at
two points a distance a = 0.46 m apart as shown.

The bolt on the left is pulling downward
on the board with a force magnitude FL = 64.5 N.
The force exerted by the other bolt is unknown.

The board is also supported a distance d = 0.89 m from the
right end by a spring that is pushing upward with
a force of magnitude Fs = 422.6 N.

How far is Wigglytuff's CM from the left end of
the board if his mass is m = 5.6 kg?

x =  m

Explanation / Answer

part a

if door does not move so torqe will be equal from both side

let green guy push x distance from hinge

so

toque of Bark=torque of green guy

0.580*175=x*215

x=0.47209m

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