Explore

Practice Sheets

Practice Paper

Prepared by: learnloophq@gmail.com

Last edited 26 days ago by Learn LoopHQ.

Answer key

Chapter: 05. Simple Machine

⁠

Simple Machines: Practice Exam

Instructions: Read each question carefully and answer to the best of your ability.

Student Name: _________________________

Date: _________________________

⁠

Section A: Multiple Choice Questions (MCQs)

Choose the best answer for each question.

Which of the following is NOT an advantage of using machines? a) They help to do work with less effort. b) They always have 100% efficiency. c) They can change the direction of force. d) They help us to do unsafe work safely.

A seesaw is an example of which type of lever? a) First order lever b) Second order lever c) Third order lever d) Not a lever

What is the fixed point around which a lever turns called? a) Load b) Effort c) Fulcrum d) Arm

Which simple machine is essentially an inclined plane wrapped around a cylinder? a) Wedge b) Pulley c) Screw d) Wheel and Axle

A nutcracker is an example of which type of lever? a) First order lever b) Second order lever c) Third order lever d) Compound lever

Section B: Fill in the Blanks

Complete the following sentences with the correct word(s).

Machines help us to do our work _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The weight to be lifted or moved by a machine is called the _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The ratio of the load to the effort is known as _ _ _ _ _ _ _ _ _ _ _ _ _ _.

When the load is between the fulcrum and the effort, it is a _ _ _ _ _ _ _ _ _ _ _ _ _ _ lever.

Ramps in multilevel parking lots are examples of an _ _ _ _ _ _ _ _ _ _ _ _ _ _.

A _ _ _ _ _ _ _ _ _ _ _ _ _ _ is formed when two inclined planes are attached back to back.

A tap is an example of a _ _ _ _ _ _ _ _ _ _ _ _ _ _ arrangement.

A simple machine that consists of a wheel with a grooved rim, over which a rope or chain can be passed, is called a _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Moving parts of machines should be _ _ _ _ _ _ _ _ _ _ _ _ _ _ to reduce friction.

A machine made up of two or more simple machines is called a _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Section C: True/False Questions

Read each statement and write TRUE or FALSE.

Archimedes invented the very first simple machines over 2 million years ago.

The mechanical advantage of a lever is a pure number without any unit.

In a lever of the third order, the effort arm is always shorter than the load arm.

The sharper the edge of a wedge, the more effort is required to cut something.

A single fixed pulley changes the direction of the effort.

Section D: Explanations of Terms

Explain the following terms in one to two sentences.

Simple Machines:

Effort Arm:

Efficiency of a machine:

Section E: Diagram-Based Questions

Look at the image below and answer the questions.

This image shows a common tool.

{

"image_description": "A side view of a simple lever. On the left side, a large, heavy rectangular block labeled 'Load (L)' rests on the lever, close to the triangular pivot point labeled 'Fulcrum (F)'. On the right side, a downward arrow labeled 'Effort (E)' is applied by a hand far from the fulcrum. The distance from the fulcrum to the load is indicated as 'Load Arm (0.5m)', and the distance from the fulcrum to the effort is indicated as 'Effort Arm (2.5m)'.",

"style": "diagrammatic",

"elements_to_include": ["lever", "fulcrum", "load block", "effort arrow", "load arm label", "effort arm label"],

"keywords_for_ai_generator": ["lever diagram", "fulcrum in middle", "load effort positions", "mechanical advantage setup", "labeled distances"]

}

⁠

a) What simple machine does this diagram illustrate? b) Name one real-life example of this specific class of simple machine.

This image shows a method of moving objects.

{

"image_description": "A person is pushing a heavy, cylindrical barrel up a long, gently sloped wooden ramp onto the bed of a delivery truck. The ramp connects the ground to the truck bed. The vertical height from the ground to the truck bed is marked 'Height', and the length of the ramp along its slope is marked 'Distance'.",

"style": "realistic drawing",

"elements_to_include": ["person pushing barrel", "wooden ramp", "delivery truck", "ground", "height label", "distance label"],

"keywords_for_ai_generator": ["inclined plane", "ramp for loading", "barrel on ramp", "truck loading", "effort reduction"]

}

⁠

a) What simple machine is being used in this picture? b) How does this machine make the work of moving the barrel easier?

Section F: Short Answer Questions

Answer the following questions in 2-3 sentences.

List three advantages of using machines in daily life.

What is the main difference in function between a single fixed pulley and a single movable pulley?

Why do compound machines tend to have lower efficiency than simple machines, even though they can have a greater mechanical advantage?

Rahul weighs 35 kgf and sits 84 cm from the fulcrum of a seesaw. Gaurav weighs 42 kgf. How far must Gaurav sit from the fulcrum to balance Rahul?

Section G: Differentiate Concepts

Clearly explain the difference between the following terms.

Load Arm and Effort Arm

Section H: Environmental Awareness / Everyday Use

How does taking proper care of machines (like regular cleaning and lubrication) help to conserve the environment? Mention two ways.

⁠

Section I: Long Answer Questions

Answer the following questions in 4-5 sentences.

Describe the three types of levers (first, second, and third order), explaining the position of the fulcrum, load, and effort in each. Provide a different example for each type not mentioned in previous questions.

Explain what an ideal machine is and why it is not achievable in practice. What are the two main factors that determine a machine’s ability to do work?

⁠

Want to print your doc?
This is not the way.

Try clicking the ⋯ next to your doc name or using a keyboard shortcut (

CtrlP

) instead.