Bennett Mechanical Test Structures and Center of Gravity 2

Question 1

Two workers carry a uniform plank by holding its two ends. If a heavy box is placed on the plank closer to worker A, who bears more weight?

Accepted Answer

Worker A

Answer

Worker B

Answer

Both equal

Answer

Neither, the plank holds it

Question 2

Where is the center of gravity of a uniform solid sphere located?

Accepted Answer

At its geometric center

Answer

On its surface

Answer

Near the top

Answer

It has none

Question 3

A pyramid stands on its wide base. Why is it very stable?

Accepted Answer

Low center of gravity and wide base

Answer

High center of gravity

Answer

Narrow base

Answer

It is hollow

Question 4

To make a tall stack of blocks more stable, you should add weight where?

Accepted Answer

At the bottom

Answer

At the top

Answer

On one side

Answer

It does not matter

Question 5

An object tips over when its center of gravity passes beyond what?

Accepted Answer

The edge of its base of support

Answer

Its own height

Answer

The midpoint

Answer

The center of the room

Question 6

A symmetrical I-beam is supported at both ends with equal length overhangs. Where is its center of gravity?

Accepted Answer

At its midpoint

Answer

At the left end

Answer

At the right end

Answer

Outside the beam

Question 7

Which structure better resists being pushed over by wind: a wide squat building or a tall thin tower of the same weight?

Accepted Answer

The wide squat building

Answer

The tall thin tower

Answer

Both equally

Answer

Neither resists wind