Simple Machines #1
What type of Machine is an axe?
a wedge
What simple machine opens a can of meat?
Wheel and Axle -key
What is a compound machine?
A machine with 2 or more simple machines.
How many simple machines in a hammer?
2. wedge and a lever
What machines make up a screw driver"?
Wheel and Axle
Name 2 machines that use gears!
TBD
What type of a machine are found in a pair of scissors? It has 2!
Lever and Wedge
What is the fixed point of a lever called?
Fulcrum
How does an incline plane make work easier?
By spreading the work over a longer distance.
What type of machine is a screw?
incline plane
Name 3 kinds of levers?
Scissors, See saw, your arm, crow bar, stapler, wheelbarrow, broom, etc. etc.
What is the name of the benefit we get from using a machine?
Mechanical Advantage
Name 3 tools or objects that use an incline plane!
TBD by teacher!
Name 2 machines that use pulleys.
crane, window blinds, clothes line, sail boat, elevator, ski-lift, curtains, exercise machine, hoist, zip-line, car engine, flag pole
Which provides a greater mechanical advantage a fixed pulley or a moveable pulley?
A movable pulley provides greater mechanical advantage than a single fixed pulley.
Fixed Pulley: Mechanical Advantage = 1. It changes the direction of the force but does not reduce the effort needed to lift the load (ignoring friction).
Movable Pulley: Mechanical Advantage = 2. It reduces the effort needed to lift a load by half (in an ideal system).