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Posted by on Sunday, May 20, 2012 at 4:27pm.

A rectangular plank with mass m kilograms measures x metres
wide by y metres high. It is clamped at its very left edge, one
third of the way down from the top, as shown. To keep the
plank level, the clamp must exert a torque of

  • Physics - , Sunday, May 20, 2012 at 6:28pm

    ..equal to the torque about the clamp produced by the plank's weight acting at the center of mass.

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