AP Physics C: Mechanics Question of the Day

Test your knowledge with a hand-picked multiple-choice question.

A $\small 15kg$ crate is pulled across a horizontal floor at a constant velocity of $\small 3$\frac{m}{s}$$ . The coefficient of kinetic friction between the crate and the floor is $\small 0.20$ . If the rope pulling the crate is angled at $\small $45^o$$ above the horizontal, what force must be applied to maintain this constant velocity?