FREE DAA Mechanical Comprehension: Levers and Pulleys Questions and Answers

Question 1

A seesaw is a classic example of which class of lever?

Accepted Answer

Class 1 Lever

Answer

Class 2 Lever

Answer

Class 3 Lever

Answer

Compound Lever

Question 2

What is the ideal mechanical advantage (IMA) of a single fixed pulley?

Accepted Answer

1

Answer

0

Answer

2

Answer

It depends on the load

Question 3

A wheelbarrow is an example of which class of lever?

Accepted Answer

Class 2 Lever

Answer

Class 1 Lever

Answer

Class 3 Lever

Answer

It is not a lever

Question 4

In a pulley system, a load of 100N is lifted by an effort of 25N. What is the mechanical advantage of the system?

Accepted Answer

4

Answer

2

Answer

3

Answer

5

Question 5

A fishing rod, when casting a line, functions as which class of lever?

Accepted Answer

Class 3 Lever

Answer

Class 1 Lever

Answer

Class 2 Lever

Answer

Not a lever

Question 6

To lift a 200kg box using a lever, you apply force 4 metres from the fulcrum. The box is 1 metre from the fulcrum. How much effort (force) is required? (Assume g = 10 m/s²)

Accepted Answer

500N

Answer

200N

Answer

400N

Answer

800N

Question 7

What is the ideal mechanical advantage of a pulley system with 3 movable pulleys and 1 fixed pulley, where the rope is attached to the fixed support?

Accepted Answer

6

Answer

3

Answer

4

Answer

7