5.
Which of the following is not an example of a simple machine?
A. lever
B. pulley
C. spring
D. wheel and axle
6.
A screw is an example of a simple machine that would be most useful for
A. Cutting trees
B. Lifting cargos
C. Slicing a meat
D. Opening a cork bottle
Which of the following is not an example of a simple machine?
A. lever
B. pulley
C. spring
D. wheel and axle
6.
A screw is an example of a simple machine that would be most useful for
A. Cutting trees
B. Lifting cargos
C. Slicing a meat
D. Opening a cork bottle
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Answer:
5.)C.spring
6.)B.Lifting cargos
Explanation:
5.)A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage to multiply force.
6.)Screws are widely used in threaded fasteners to hold objects together, and in devices such as screw tops for containers, vises, screw jacks and screw presses.