You are holding a bulletin board weighing 7.01 N in place against a wall while your friend secures it to the wall. To keep it from slipping, you apply a force perpendicular to the bulletin board, pressing it directly into the wall. How large must this force be if the coefficient of static friction with the wall is 0.44?

To determine how large the force must be to keep the bulletin board from slipping, we can use the equation:

Force of static friction (fs) = coefficient of static friction (μ) * Normal force (N)

In this scenario, the normal force (N) is equal to the weight (W) of the bulletin board, which is given as 7.01 N.

So, plugging in the values we know:

fs = μ * N

fs = 0.44 * 7.01 N

fs ≈ 3.08 N

Therefore, the force you need to apply to keep the bulletin board from slipping is approximately 3.08 N.