a-5-0-kg-cat-and-a-2-0-kg-bowl-of-tuna-fish-are-at-opposite-ends-of-the-4-0-m-lo

Question

A 5.0-meter-long plank rests upon a fulcrum (pivot/midpoint). On one end of the plank, there is a 4.0 kg backpack, while on the opposite end, there is a 1.5 kg lunchbox. In order to maintain equilibrium on the plank, determine the distance at which a 2.5 kg rat should be positioned to the left of the plank's midpoint.

A plank with a backpack and lunchbox on each end, showing a rat's position for equilibrium calculation.

Accepted Answer

2.5 m​

Answer

1.5 m

Answer

0.50 m

Answer

1.0 m