1) A sharp tool is formed on joining two inclined planes . such a tool is called a a) wedge b) pulley c) inclined plane d) lever 2) a lever has three parts namely , effort, load and a) roll b) force c) grooved wheel d) fulcrum 3) These is the example of simple machines a) bycycles b) grinder c) scissor d) motorcycle 4) A device with a grooved wheel and thread designed to lift weights is called a) inclined plane b) pulley c) a wedge d) A lever

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