Question

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

Answer 1

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