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Questions and Answers
What are the parts of an inclined plane?
What are the parts of an inclined plane?
- Height, Horizontal Length and Slant length (correct)
- Length, Run, Bottom Distance
- Slope, slant, incline plane, ramp
- Height, Tall, Rise
What is the main function of a wedge?
What is the main function of a wedge?
- To separate two objects
- To hold things in place
- To lift up an object
- To split objects apart (correct)
What is the width of a wedge?
What is the width of a wedge?
- Length
- Height
- Narrowest side
- Widest side (correct)
What does the screw mechanism convert rotational motion to?
What does the screw mechanism convert rotational motion to?
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What is the mechanical advantage (MA) formula for an inclined plane?
What is the mechanical advantage (MA) formula for an inclined plane?
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Study Notes
Work and Force
- Work is equal to Force multiplied by Displacement
- Force is a push or pull on an object, which can make objects move, stop, or change directions
- Work is done on an object when a force causes it to move in the same direction as the force
Types of Simple Machines
- Inclined Plane:
- Mechanical Advantage (MA) = slant length (slope) / height
- Has three components: Height (A), Length (B), and Slope (C)
- Wedge:
- MA = slope / width
- Screw:
- MA = circumference / pitch
- Circumference = 2Ï€ x radius or diameter
- Wheel and Axle:
- MA = Wheel Radius / Axle Radius
- Pulley:
- MA = Load / Effort
Friction and Displacement
- Friction: a force that resists change in motion and makes it harder to move things
- Displacement: a measure of how far out of place an object is, or the overall change in an object's position between two points
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