hastygrace77
Answered

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Which of the following statements is true?
Large wheels need less effort than small wheels to move an object.
A block-and-tackle pulley uses only one pulley.
A screw is made of two wedges joined at the back.
All of the above.

Sagot :

abdu35189

Answer:

in my knowledge

Option A...

Explanation:

Generally speaking, the bigger the wheel, the easier it is to make something roll. 

121903

Generally speaking, the bigger the wheel, the easier it is to make something roll.

A block and tackle or only tackle is a system of two or more pulleys with a rope or cable threaded between them, usually used to lift heavy loads.

So modern screws with their screwdrivers are a combination of two simple machines – the inclined plane and the lever.

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