Real World Simple Machines By Chelsea Dehnke. Lever rigid object and a fulcrum (or pivot) Applying a force to one end of the rigid object causes it to.

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Presentation transcript:

Real World Simple Machines By Chelsea Dehnke

Lever rigid object and a fulcrum (or pivot) Applying a force to one end of the rigid object causes it to pivot about the fulcrum. Magnifies of the force at another point along the rigid object.

Wheel & Axle circular device that is attached to a rigid bar in its center. force applied to the wheel causes the axle to rotate, which can be used to magnify the force – For example, having a rope wind around the axle. force applied to provide rotation on the axle translates into rotation of the wheel – A lever that rotates around a center fulcrum…

Inclined Plane a plane surface set at an angle to another surface. do the same amount of work by applying the force over a longer distance.

Wedge a double-inclined plane that moves to exert a force along the lengths of the sides. The force is perpendicular to the inclined surfaces, so it pushes two objects (or pieces of a single object) apart.

Screw a shaft that has a in inclined groove along its surface. rotate the screw – the force is applied perpendicular to the groove, thus translating a rotational force into a linear one.

Pulley a wheel with a groove along its edge, where a rope or cable can be placed. applies force over a longer distance, and also the tension in the rope or cable, to reduce the magnitude of the necessary force.