Quiz on Simple Machines

Which simple machine can be used to hold objects together?

• Screw

• Wedge

• Pulley

• Lever

Which of the following is NOT a part of a lever system?

• Fulcrum

• Load

• Effort

• Spring

What is the relationship between input force and output force in a lever?

• They are equal

• Input force is always greater

• Output force is always greater

• Input force is converted to output force

What is the primary purpose of using a lever?

• To increase the speed of an object

• To change the direction of force

• To make work easier by changing input force into output force

• To balance two objects

In a lever system, what does the effort do?

• Supports the load

• Acts as the pivot

• Applies force

• Reduces friction

What is the input force in a machine called?

• Force of load, Fl

• Force of effort, Fe

• Mechanical advantage, MA

• Velocity ratio, VR

Which of the following is a measure of how much easier a machine makes a task?

• Force of effort

• Mechanical advantage

• Force of load

• Load force

What does mechanical advantage quantify?

• The speed of a machine

• The force amplification of a machine

• The distance covered by a machine

• The energy used by a machine

A person uses a lever to lift a 300 N rock. If they apply an effort force of 100 N, what is the mechanical advantage of the lever?

• 3
• 5
• 4
• 2

A person uses a lever where the distance from the fulcrum to the effort is 4.8 metres, and the distance from the fulcrum to the load is 1.3 metres. What is the velocity ratio of the lever?

• 4.00
• 3.69
• 2.15
• 5.25