A dump truck has a large cubical concrete block in its bed. The coefficients of friction between this block and the floor of the bed are µk = 0.450 and µs = 0.650. As the bed is slowly tilted above the horizontal, will the brick first begin to slide or will it first tip over?
A) It will first tip over.
B) It will first begin to slide.
C) It will tip over just as it begins to slide.
D) It is impossible to answer without knowing the mass of the block.
E) It is impossible to answer without knowing the dimensions of the block.

Question

Quizplus · Accepted Answer

The block will begin to slide when the static friction is overcome, which occurs at a lower angle than the angle required for tipping, given the coefficients of friction.

A Dump Truck Has a Large Cubical Concrete Block in Its