Bennett Mechanical Test Structures and Center of Gravity 4

Question 1

A ladder leans against a wall. To reduce the chance it slides out, the base should be?

Accepted Answer

Closer to the wall (steeper)

Answer

Farther from the wall

Answer

On a smooth floor

Answer

Made lighter

Question 2

Two columns support a uniform beam carrying a load at its exact center. How is the load shared?

Accepted Answer

Equally between the two columns

Answer

All on the left

Answer

All on the right

Answer

Mostly on the lighter column

Question 3

A cone resting on its point is in what kind of equilibrium?

Accepted Answer

Unstable

Answer

Stable

Answer

Neutral

Answer

No equilibrium

Question 4

A ball rolling on a flat level surface is in what kind of equilibrium?

Accepted Answer

Neutral

Answer

Stable

Answer

Unstable

Answer

Compression

Question 5

A crane lifts a load. To avoid tipping, a heavy counterweight is placed where?

Accepted Answer

On the opposite side of the pivot from the load

Answer

On the same side as the load

Answer

At the very top

Answer

On the load hook

Question 6

A truss is made of triangles because triangles are?

Accepted Answer

Rigid and do not deform under load

Answer

Easy to fold

Answer

The lightest possible shape

Answer

Always in tension

Question 7

A flatbed truck carries cargo. For best stability while turning, cargo should be loaded?

Accepted Answer

Low and centered

Answer

High and to one side

Answer

All at the rear

Answer

All at the front