When a heavy metal block is supported by a cylindrical vertical post of radius R, it exerts a force F on the post. If the diameter of the post is increased to 2R, what force does the block now exert on the post?
A)F/4
B)F/2
C)F/ $\sqrt { 2 }$
D)F
E)2F

Question

Quizplus · Accepted Answer

The force exerted by the block on the post is independent of the post's diameter. It remains F because the force is determined by the weight of the block, not the area of the post.

When a Heavy Metal Block Is Supported by a Cylindrical 2\sqrt { 2 }2​

When a Heavy Metal Block Is Supported by a Cylindrical $\sqrt { 2 }$