Question

Look for five real-life cases of people utilizing “simple machine” to get work done, including both “lever” and “incline plane”. Discuss “mechanical advantage “ and “efficiency” on each case.

Answer 1

In machines that transmit only mechanical energy, the ratio of the force exerted by the machine to the force applied to the machine is known as mechanical advantage. While The efficiency of a machine is the ratio between the work it supplies and the work put into it.

• Real life example of incline planes is  Screw Jack- where small force is applied to handle to lift heavy load because screw Jack have larger mechanical advantage. friction can decrease mechanical efficiency which can be increased by using lubricant . Some other example are ramps, sloping roads and hills, plows, chisels, hatchets, carpenter's planes, and wedges.
• Real life example of lever Include teeter-totters, wheelbarrows, scissors, pliers, bottle openers, mops, brooms, shovels, nutcrackers and sports equipment like baseball bats, golf clubs and hockey sticks. Even your arm can act as a lever.