CL.6 BK.2-3-Simple Machines

What do rollers help us do?

• Create a textured surface on walls.

• Remove old paint from surfaces.

• Dry paint quickly after application.

• Apply paint or coatings evenly on surfaces.

How do rollers reduce friction?

• Rollers increase friction by creating more surface contact.

• Rollers eliminate friction by using magnetic levitation.

• Rollers reduce friction by enabling rolling motion instead of sliding.

• Rollers reduce friction by adding lubrication between surfaces.

What is an inclined plane?

• A machine that only moves objects vertically.

• An inclined plane is a simple machine that facilitates lifting by reducing the amount of force needed.

• A type of lever that pivots around a point.

• A flat surface that is always horizontal.

How does the angle of an inclined plane affect force?

• The angle only affects the speed of an object on the plane.

• Increasing the angle decreases the parallel component and increases the perpendicular component.

• The angle of an inclined plane affects the distribution of gravitational force, increasing the parallel component and decreasing the perpendicular component.

• The angle of an inclined plane has no effect on force.

What is the effort in a lever?

• The effort in a lever is the distance from the fulcrum to the load.

• The effort in a lever is the amount of friction present in the system.

• The effort in a lever is the force applied to lift or move a load.

• The effort in a lever is the weight of the lever itself.

What is the load in a lever?

• The load in a lever is the force applied to the lever arm.

• The load in a lever is the distance from the fulcrum.

• The load in a lever is the pivot point around which it rotates.

• The load in a lever is the weight or resistance being lifted.

What is the fulcrum in a lever?

• The fulcrum is the force applied to the lever.

• The fulcrum is the load being lifted.

• The fulcrum is the pivot point of a lever.

• The fulcrum is the distance between the load and the effort.

How does the distance between effort and fulcrum affect effort?

• Decreasing the distance reduces the effort needed.

• The distance has no effect on the effort required.

• Increasing the distance increases the effort needed.

• Increasing the distance between effort and fulcrum reduces the effort needed.

Can you give an example of a lever that reduces effort?

• A wheelbarrow

• A pulley

• A hammer

• A seesaw

What is an example of a lever that makes work easier but does not reduce effort?

• Seesaw

• Inclined plane

• Pulley

• Wheelbarrow