Torque — Practice Quiz

Question 1

A 10 N force is applied perpendicular to a 0.5 m wrench. Torque:

Accepted Answer

5 N·m

Answer

10 N·m

Answer

0.5 N·m

Answer

20 N·m

Question 2

Torque is zero when:

Accepted Answer

Both (a) and (b)

Answer

r = 0

Answer

Force is parallel to r

Answer

Force is perpendicular to r

Question 3

For static equilibrium, the conditions are:

Accepted Answer

ΣF = 0 AND Στ = 0

Answer

Only ΣF = 0

Answer

Only Στ = 0

Answer

Στ ≠ 0

Question 4

Two parallel forces 5 N each in OPPOSITE directions, 0.4 m apart. Net torque (couple):

Accepted Answer

2 N·m

Answer

1 N·m

Answer

20 N·m

Answer

Zero

Question 5

Why are door handles placed FAR from hinges?

Accepted Answer

To maximise torque (large r) with minimal force

Answer

For looks

Answer

To balance the door

Answer

Energy savings