screw simple machine

Bridge is not a machine, it is a structure. A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or road, without closing the way underneath. It is constructed for the purpose of providing passage over the obstacle, usually something that can be detrimental to cross otherwise.

The most notable of these are known as the “six simple machines”: the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually just extensions or combinations of the first three.

Inclined Plane

The bottom of your bathtub is also an inclined plane because it is sloped to force water toward the drain.

lever

Build a SeeSaw

1. Cut empty paper towel roll in half.
2. Using a ruler and pen, mark the center of the halved paper towel roll.
3. Fold the halved paper towel roll in-half lengthwise, and poke two holes through the folded roll at the center location marked in Step 2.
4. Make the holes into slots, to allow for horizontal adjustment.

1) can a straw be used as a simple machine? Yes, it can be part of a lever, an inclined plane or a pulley.

Answer. Answer: Wheel & Axle . toilet paper dispenser – In the bathroom: When you pull on the toilet paper, the roll moves on an axle in a circular motion.

A wheel and axle is made by putting a shaft through the center of a larger wheel. In the case of a doorknob, the knob is the wheel and the central shaft through the door is the axle. The knob requires application of less force to turn the knob than what’s needed to turn the shaft by itself.

inclined plane

wheel and axle

A pair of scissors is a compound machine consisting of levers and wedges.