Thames & Kosmos Little Labs: Physics & Forces (Version 2) handleiding

Niet gecategoriseerd

Thames & Kosmos

20 pagina's

PDF beschikbaar

Handleiding

What are simple machines?

Answer:

Simple Machines are devices that just need a single force to do work. They are used

to make work easier, because they can reduce the amount of force needed to do the

work, such as move an object. There are six simple machines:

Lever: a bar that rests on a turning

point that can be used to decrease

the amount of force needed to move

a load.

Experiment 1.

Examples: seesaw, crowbar,

doorknob

Inclined Plane: a surface set at an

angle that can be used to decrease

the force it takes to move a load by

increasing the distance that load

must travel.

Examples: ramp, knife blade,

propeller

Pulley: a wheel with a groove in it

that holds a cable. It can reverse the

direction of a force, and when used

in combination with other pulleys,

can decrease the amount of force

needed to move a load.

Experiments 3 and 4.

Examples: clothesline, block and

tackle, hoist

Wedge: two inclined planes put back

to back that can be used to split

objects.

Examples: axes, wedges, nails

Wheel and Axle: a lever that turns

in circles around a point, which

can decrease the amount of force

needed to move a load.

Experiments 5 and 7.

Examples: wheels on a car, gears

on a bike

Screw: an inclined plane wrapped

around a cylinder. It can convert a

force going in a circle into a force

going in a straight line.

Examples: wood screws, worm

gears

Bekijk gratis de handleiding van Thames & Kosmos Little Labs: Physics & Forces (Version 2), stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.