Exploring Simple Machines

What are the six types of simple machines?

• lever, pulley, inclined plane, block, screw, gear

• lever, wheel, axle, spring, wedge, ramp

• gear, lever, wheel, axle, pulley, block

• lever, wheel and axle, pulley, inclined plane, screw, wedge

Can you name a type of lever and its parts?

• Second-class lever with pivot, force, and weight.

• Third-class lever with anchor, power, and mass.

• Inclined plane with base, height, and load.

• First-class lever with fulcrum, effort, and load.

How does a lever help lift heavy objects?

• A lever helps lift heavy objects by amplifying force through the use of a fulcrum.

• A lever only functions with equal weights on both sides.

• A lever works by pushing the object directly upwards.

• A lever reduces the weight of the object being lifted.

What is an inclined plane and where is it used?

• An inclined plane is a type of wheel used in vehicles.

• An inclined plane is used exclusively in construction for building walls.

• An inclined plane is a flat surface that is always horizontal.

• An inclined plane is used in ramps, slides, and loading docks to facilitate the movement of heavy objects.

What is the formula for calculating the mechanical advantage of an inclined plane?

• MA = Length of the incline / Height of the incline

• MA = Base of the incline / Height of the incline

• MA = Weight of the object / Force applied

• MA = Height of the incline / Length of the incline

How many classes of levers are there?

• 4

• 3

• 5

• 2

Give an example of a first-class lever.

• Pulley

• Scissors

• Wheelbarrow

• Seesaw

What is the difference between a fixed and a movable pulley?

• A fixed pulley can lift heavier loads than a movable pulley.

• Both types of pulleys are used for the same purpose without any difference.

• A fixed pulley does not move with the load, while a movable pulley moves with the load.

• A movable pulley is always fixed in one position.

How does an inclined plane reduce the effort needed to lift an object?

• It increases the weight of the object being lifted.

• It allows the object to be lifted straight up without any distance.

• It uses a pulley system to lift the object more easily.

• An inclined plane reduces the effort needed to lift an object by allowing it to be raised over a longer distance at a lower height.

What type of simple machine is a wheelbarrow?

• pulley

• lever

• wedge

• inclined plane