Exploring Simple Machines

What are the six types of simple machines?

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

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

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

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

Which simple machine is a ramp?

• Inclined plane

• Wheel and axle

• Pulley

• Lever

What type of simple machine is a wheel and axle?

• A wheel and axle is a type of lever.

• A wheel and axle is a type of inclined plane.

• A wheel and axle is a type of pulley.

• A wheel and axle is a type of simple machine.

How does a lever help lift heavy objects?

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

• A lever works by pushing the load directly without a pivot.

• A lever helps lift heavy objects by amplifying the input force through a pivot point, making it easier to lift the load.

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

What are the three classes of levers?

• First-class, Second-class, Third-class

• Lever-type, Lever-system, Lever-model

• Static-class, Dynamic-class, Kinetic-class

• Single-class, Double-class, Triple-class

Can you name an example of a first-class lever?

• Pulley

• Wheelbarrow

• Seesaw

• Scissors

What is the purpose of a pulley?

• To store energy for later use.

• To increase the speed of a moving object.

• To create a fixed point for a lever.

• The purpose of a pulley is to lift heavy objects more easily by changing the direction of the applied force.

How does a wedge function as a simple machine?

• A wedge is used to lift heavy objects without any force.

• A wedge is primarily designed for cutting through materials.

• A wedge converts force to perform work, making tasks easier.

• A wedge functions by rotating around a pivot point.

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

• A fixed pulley moves with the load and changes the direction of force.

• A movable pulley is stationary and does not reduce the effort needed to lift.

• Both pulleys are used to lift loads without changing the direction of force.

• A fixed pulley is stationary and changes the direction of force, while a movable pulley moves with the load and reduces the effort needed to lift it.

What type of lever is a seesaw?

• Second-class lever

• First-class lever

• Third-class lever

• Fixed lever