Basics & Laws
Mechanical Advantage
Levers & Pulleys
Inclined Planes, Wedges & Screws
Energy & Motion
100

What is the name for the resistance of an object to changes in its motion? (Newton’s 1st Law)

Inertia

100

What does "mechanical advantage" tell us?

How much a machine multiplies your force

100

Which lever has the fulcrum in the middle, like a seesaw?

Class 1 lever

100

What is the mechanical advantage formula for an inclined plane?

Length ÷ Height

100

What kind of energy does something high up have?

Potential Energy

200

What equation is Newton's Second Law represented by?

F = m × a (Force = mass × acceleration)

200

What’s the difference between ideal and actual mechanical advantage?

Ideal is perfect (no friction); actual is real (with friction)

200

What is the rule of levers in simple terms?

Effort × Distance = Load × Distance

200

How does a wedge help us do work?

It pushes things apart using force in one direction

200

What is the formula for kinetic energy?

KE = ½ × mass × speed²

300

What are the six classical simple machines?

Name atleast 2

Lever, Inclined Plane, Wheel and Axle, Wedge, Pulley, Screw

300

A machine uses 20 N of effort to lift 80 N. What is the mechanical advantage?

4 (80 ÷ 20)

300

Which pulley makes it easier to lift by moving with the load?

Moveable Puller

300

What’s the difference between pitch and lead in a screw?

Pitch is between the threads; lead is how far it moves in one turn

300

What does the Law of Conservation of Energy say?

Energy can’t be created or destroyed—just changed

400

What does a simple machine do to force? Name two ways it modifies it.

Changes the direction or magnitude of the force

400

Why is actual mechanical advantage always lower than the ideal one?

Because of friction and energy loss

400

What does “rove to advantage” mean in a pulley setup?

The effort pulls the same way the load moves; it's easier

400

Why aren’t screws used much for transferring power?

They lose too much energy from friction

400

What is impulse, and what does it do?

Impulse = Force × Time; it changes how fast something is moving

500

What’s the difference between a vector and a scalar? Give one example of each.

Vector has direction (like force), scalar doesn’t (like mass)

500

A pulley has 4 ropes lifting 400 N. How much effort is needed (no friction)?

100 N (400 ÷ 4)

500

How does a compound pulley help us lift heavy things?

It uses more pulleys to reduce the amount of effort needed

500

A screw with 2 mm between threads turns halfway. How far does it move?

1 mm

500

A machine lifts 50 N for 2 meters in 5 seconds. How much power is used?

20 watts (50 × 2 ÷ 5 = 100 ÷ 5)