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A simple machine that consists of a rope that fits into a groove in a wheel. Pulley A simple machine that consists of two disks or cylinders, each one with a different radius. Wheel and Axle Wedge Pulley A jar lid Lever Wheel and Axle The blade of a knife Inclined Plane A broom handle Screw A rigid bar that is free to move around a fixed point called a fulcrum. Lever A slanted surface along which a force moves an object to a different elevation. Inclined Plane An inclined plane wrapped around a cylinder. Screw A V-shaped object whose sides are two inclined planes sloped toward each other.

After answering that what is each object
broom-
the blade of a knife-
door knob-
Jar lid-
the side of a slide-
choices
wedge
screw
inclined plane
lever
wheel and axle

1 answer

Certainly! Let's identify each object based on the descriptions you've given and assign them to the correct simple machine category:

  1. Broom - Lever (the handle acts as a lever to sweep with the broom bristles)

  2. The blade of a knife - Wedge (the blade is a wedge that cuts by applying force to its edge)

  3. Door knob - Wheel and Axle (a door knob functions as a wheel and axle, where turning the knob rotates the spindle, which operates the latch)

  4. Jar lid - Screw (the threads of a jar lid work like a screw; twisting it tightens or loosens it)

  5. The side of a slide - Inclined Plane (the slide has a slanted surface which facilitates moving down from a higher to a lower point)

So the classifications would be:

  • Broom: Lever
  • Blade of a knife: Wedge
  • Door knob: Wheel and Axle
  • Jar lid: Screw
  • Side of a slide: Inclined Plane