Question

ill. State if the following statements are True or False. Correct the false statement.
1. A machine can do work by itself.
2. A stapler is a complex machine.
3. A lemon squeezer is a lever of class-III.
4. A pulley is a grooved wheel.
5. A wheel and axle is a simple machine made up of two identical cylinders.​

Answer 1

Answer:

true

true

false it is the level of class ll

pulley is a simple machine that consists of a rope and grooved wheel.

false

Explanation:

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