Scissors are composed of two different types of simple machines: wedge and lever. The scissors’ blades are sharpened into wedges, and the arms that are squeezed together are levers. These are the lever, screw, inclined plane, wedge, wheel and axle, and the pulley.
Q. How can the mechanical advantage and efficiency of a machine be increased?
The mechanical advantage increases as the slope of the incline decreases. But the load will then have to be moved a greater distance. The ideal mechanical advantage (IMA) of an inclined plane is the length of the incline divided by the vertical rise, the so-called run-to-rise ratio.
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Q. Why are axle and wheel always found together?
The work done is always force times distance, and this must always be the same because of the conservation of energy. The wheel and axle both rotate at the same rate. What this means is that both the axle and the wheel will complete one full rotation in the same amount of time (as opposed to how gears work).
Q. Does an axle rotate?
In most vehicles, the rear axles rotate with the vehicle’s wheels. Front axle: The front axle facilitates steering, absorbs shocks from driving on uneven road surfaces and carries the weight of the front part of the vehicle. Stub axle: These carry the front wheels of the car.
Q. How do you put wheels on a plastic container?
One option in adding wheels to a plastic storage bin is mounting the wheels directly into the plastic. You’ll need a drill and four plastic wheels with mounting hardware. Drill a hole about one inch away from each corner when installing the wheels.
Q. How do you put wheels on a backpack?
Place the casters on the center of each of the holes and insert small threaded bolts into the casters. Push the bolts through the holes from inside the backpack to the outer edge, not outer-edge-in. Tighten the bolt nuts on the bottom of the bolts with the wrench and make sure the caster plates are secured tightly.
