Common examples of simple machines include the hammer, crowbar, knife, log splitter, scissors, light switch, door knob, escalator, ladder, screwdriver, ramp, stairs, car jack, curtain cord and steering wheel. The six types of simple machines include the wheel and axle, inclined plane, simple lever, pulley, wedge and screw. The wheel and axle, simple lever and pulley constitute the lever family, while the inclined plane, wedge and screw are part of the inclined plane family.Know More
A machine is an electrical or mechanical contraption that lightens a workload. It utilizes energy to alter the direction, increase the rate, transfer or multiply the force required to carry out a particular task. There are two types of mechanical machines: simple and compound. A simple machine is composed of only one mechanical apparatus, while a compound machine comprises two or more simple machines.
Simple machines provide a mechanical advantage, which is the factor by which a machine increases the magnitude of a force. The work output refers to the amount of work done by a machine, while the work input pertains to the amount of work exerted into the machine. The lever family exerts a rotational force that changes the direction of the work output from the work input. The inclined plane family alters the direction of work output at an angle of 90 degrees to the direction of the work input.Learn more about Physics
Walking across a carpeted floor and getting a shock when touching a door knob or other metal object is an example of static electricity. Clothes stuck to one another after being in the dryer is another example of static electricity.Full Answer >
Entropy is seen in situations that involve the dispersal of energy from a concentrated state to a less concentrated one, such as a hot pan cooling down, a tire blowing and releasing its air, the rusting of metal or cream mixing with coffee in a mug. These examples follow the definition of entropy, which is a measure of how energy and matter are dispersed within a system.Full Answer >
By learning about the six simple machine types, kids can gain a better understanding of how people have always looked for solutions to solve their problems, sought more effective ways to do their work and learned to control or redirect forces to their advantage. Although the modern world makes use of a wide variety of compound machines, learning about the six simple machines that combine to form them provides insight into how the direction of a force and its speed can be altered to accomplish a desired goal. Many modern machines make use of the same basic principles that enable the six simple machines to do their work.Full Answer >
The Medical College Admissions Test is a computer-based test that medical-school admissions departments use to gauge future success as a health professional. Multiple-choice tests include questions about physical sciences, verbal reasoning and biological sciences. Some websites offer free practice tests. Questions about physics are in the physical science portion of the test.Full Answer >