Physics

Problem

4.0\,\text{m}

long uniform plank of mass

30\,\text{kg}

rests horizontally on two sawhorses located at its ends. A

60\,\text{kg}

person stands

1.0\,\text{m}

from the left end. Assuming the plank remains perfectly horizontal, what upward force is exerted by the left sawhorse? a)

735\,\text{N}

588\,\text{N}

441\,\text{N}

294\,\text{N}