When a box rests on a round sheet of wood on the ground, it exerts an average pressure p on the wood. If the wood is replaced by a sheet that has half the diameter of the original piece, what is the new average pressure?
A)4p
B)2p
C)p $\sqrt { 2 }$
D)p/2
E)p/4

Question

Quizplus · Accepted Answer

The pressure is inversely proportional to the area. If the diameter is halved, the area is reduced by a factor of 4. Therefore, the pressure is increased by a factor of 4.

When a Box Rests on a Round Sheet of Wood 2\sqrt { 2 }2​

When a Box Rests on a Round Sheet of Wood $\sqrt { 2 }$