12 Questions
A knife is an example of the simplest ______ used by us.
machine
The lever is a bar-like rigid object that is free to move about a fixed point called ______.
fulcrum
Sometimes, a lever is used to decrease the force to perform delicate ______.
jobs
All levers have three parts: Load, Fulcrum, and ______.
Effort
On the basis of the position of the load, the fulcrum, and the effort, levers are classified into three ______.
types
When the fulcrum is between the load and the effort, it is called a first-class ______.
lever
A bike wheel is a common example of a complex machine.
False
A wedge is a simple machine used to lift heavy objects.
False
All levers have four parts: Load, Fulcrum, Effort, and Support.
False
The position of the load determines the classification of a lever.
True
In a first-class lever, the effort is positioned between the load and the fulcrum.
False
A pair of scissors is an example of a second-class lever.
True
Test your knowledge on simple machines that make work easier by applying force at a particular point. Learn about common examples like knives, brooms, scissors, bike wheels, and bottle caps.
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