Unit 8 · Simple Machine

Simple Machine Presentation

ScienceSubject
8 minEstimated read
Slide 1 of 4
Science and Technology, Class 9

Simple Machine

Four types · Mechanical advantage (MA) · Velocity ratio (VR)

Simple machines all around us

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The pulley at a well makes drawing water easy

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A door knob turns the rod inside the door

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The edge of an axe splits firewood

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A sloping plank carries a heavy box up

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Presenter notes: Today we talk about simple machines. From the pulley at a well to the knob on a door, every one of you has already used a simple machine this very morning.