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Simple Machines Q3

QuestionAnswer
What type of simple machine is a Staircase? Inclined Plane
What type of simple machine is a Ladder? Inclined Plane
What is a Fulcrum? Pivot Point
What is in the middle of a Class-1 Lever? What are some examples? Fulcrum in the middle EXAMPLE-scissors, teeter-totter,crowbar, paint can opener, can opener
What is in the middle of a Class-2 Lever? What are some examples? Load in the Middle EXAMPLE-nut cracker, wheel barrel
What is in the middle of a Class-3 Lever? What are some examples? Effort in the Middle EXAMPLE-tweezers,baseball bat,tennis racket, broom
A Log Spliter is what type of simple machine Wedge
What are the six simple machines? Lever, pulley, wedge, wheel and axle, screw, inclined plane
How do you lift a load easier with a lever? place the load as close as you can to the fulcrum
How do you lift a load easier with a pulley? use more pulleys; have more ropes to support the load
Where is the load located on a two-pulley system? attached to the moveable pulley (bottom pulley)
Which pulley system does not reduce advantage by reducing the effort? single fixed pulley
Which pulley system has the most advantage by reducing the effort? two-pulley system:single fixed, movable pulley- effort pulling upwards with effort pulled up
How can you predict the effort needed to lift a load using a pulley system? divide the weight by the number of ropes EXAMPLE- 10 pound bag of cement divided by a pulley system having 5 supporting ropes the effort is 2 (feels like you are only lifting an object weighing 2 pounds)
How can you predict the distance of effort needed to lift a load using a pulley system? multiply the height of the lift and the amount of ropes EXAMPLE- 5 foot wall and a pulley system with 4 supporting ropes; distance of effort is 20 feet
What unit of measurement is used to measure force? Newton
Mechanical advantage is less effort needed- two pulley system with effort pulling up
Directional advantage is changes the direction of the object- single fixed pulley system
Created by: slump
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