Levers
Name that
simple machine
simple machine
Pulleys
Name that real world simple machine
Wheel and Axle
100
What class of lever is a Nutcracker?
Second Class lever
100
A simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. It is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load and effort, it is divided into three types. What type of simple machine is this?
Lever
100
What is the definition of a pulley?
A wheel with a grooved rim around which a cord passes. It acts to change the direction of a force applied to the cord and is chiefly used to raise heavy weights.
100
Wheelbarrow
Lever
100
What is a wheel and axel?
A simple lifting machine consisting of a rope which unwinds from a wheel on to a cylindrical drum or shaft joined to the wheel to provide a mechanical advantage?
200
How do levers make work easier?
It allows people to use less force to move heavier objects
200
A simple machine consisting of a wheel attached to a smaller axle so that these two parts rotate together in which a force is transferred from one to the other. what type of simple machine is it?
Wheel and Axle
200
What are the effects of pulleys?
They change the direction of an applied force and they can even reduce the force needed to lift a weight.
200
Elevators
Pulley
200
Example of a Wheel and Axle that has two words that start with S and D?
Screw Driver
300
What is a lever used for?
to move or lift objects
300
A flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load. It is one of the six classical simple machines defined by Renaissance scientists. What type of simple machine is it?
Inclined Plane
300
Why are pulleys non efficient?
There is always some friction between the pulley and the string.
300
Staircase
Inclined Plane
300
What type of phone is a wheel and axle?
Rotary Phone
400
what class of lever is this?
Second class lever
400
It is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable or belt, or transfer of power between the shaft and the cable or belt. What type of simple machine is it?
Pulley
400
Do movable pulleys increase force?
No as it both magnifies and changes the direction of the force
400
Car Tires
Wheel and Axle
400
The wheel and axle contains...
a round disk, known as a wheel, with a rod through the center of it, known as the axle.
500
What class are these levers?
.Broom
.Tweezers
.Fishing rod
. Tongs
Third class
500
A triangular shaped tool, a portable inclined plane, and one of the six simple machines. It can be used to separate two objects or portions of an object, lift up an object, or hold an object in place. What simple machine is it?
Wedge
500
What should you do if a pulley goes bad?
Rock the pulley back and forth. There should be no movement or play from side to side.
500
Zipper
Wedge
500
What is the disadvantage of the wheel and axle?
Your load can slow down depending on how much force is applied.