Machines and Movement

Mechanical Advantage is defined as

• load x effort
• load/effort
• load + effort
• load - effort

Which of the following classes of levers may be described as distance multipliers?

• first and second order
• second order only
• second and third order
• third order only

In which of the following machines is the fulcrum between the effort and the load?

• nutcracker
• scissors
• tweezers
• wheelbarrow

The rod that is pulled to operate the handbrake of a car is an example of

• inclined plane
• lever
• pulley
• screw

Which machine would you use to load a motorcycle on the back of a truck?

• a lever
• a pulley system
• a simple pulley
• an inclined plane

Which machine would you use to lift an engine out of a car?

• lever
• an inclined plane
• block and tackle
• single moving pulley

A pulley system which can lift a 1500N load with a 300N effort has a mechanical advantage of?

• 5
• 10
• 1200
• 1800

What is the work done of a mass of 200kg is lifted 2m?

• 4J
• 400J
• 4000J
• 40000J

The forearm lifting a load is an example of:

• a first order lever
• a third order lever
• a second order lever
• a force mulitplier

Which pair of examples of levers is normally belongs to the same class

• bottle opener and scissors
• car bonnet and pliers
• crowbar and pliers
• wheelbarrow and scissors