A construction crew must use a lever to lift a boulder. The mechanical advantage of the lever is 6 and the lever applies a force of 1600 N to the rock. What is the force that the construction crew must apply to the lever?

To determine the force that the construction crew must apply to the lever, we need to use the formula for mechanical advantage:

Mechanical Advantage = Output force / Input force

Given that the mechanical advantage is 6 and the lever applies a force of 1600 N to the rock (which is the output force), we can rearrange the formula to solve for the input force:

Input force = Output force / Mechanical Advantage
= 1600 N / 6

Input force = 266.67 N

Therefore, the construction crew must apply a force of approximately 266.67 N to the lever.