Bennett Mechanical Test Force and Torque 3

Question 1

A door is hardest to open when you push:

Accepted Answer

Near the hinges

Answer

At the outer edge

Answer

At the middle

Answer

On the handle

Question 2

Two equal and opposite forces acting on a wheel at its edges create a:

Accepted Answer

Couple producing rotation

Answer

Net forward push

Answer

Zero torque

Answer

Linear acceleration only

Question 3

A 100 N force pushes a crate but it does not move. The opposing force from friction must be:

Accepted Answer

100 N

Answer

0 N

Answer

200 N

Answer

50 N

Question 4

Increasing the force on a wrench while keeping the handle length fixed will:

Accepted Answer

Increase the torque

Answer

Decrease the torque

Answer

Keep torque unchanged

Answer

Reverse the torque direction

Question 5

A nut needs 24 N·m of torque to turn. Using a 0.3 m wrench, what minimum force is needed?

Accepted Answer

80 N

Answer

24 N

Answer

7.2 N

Answer

240 N

Question 6

Which action does NOT change an object's torque about a pivot?

Accepted Answer

Painting the object a different color

Answer

Moving the force closer to or farther from the pivot

Answer

Changing the size of the force

Answer

Changing the angle of the force

Question 7

A beam balances on a pivot with equal weights at equal distances. This beam is in:

Accepted Answer

Equilibrium

Answer

Acceleration

Answer

Free fall

Answer

Rotation