CBSE Class Notes Online – Classnotes123
CBSE Class Notes and Question Answers Online – Classnotes123
MULTIPLE CHOICE QUESTIONS: (38 – Solved MCQS) 1 . A machine is a tool which makes work easier saves our time needs less effort All of the these 2 . …
Read MoreShort answer questions. Why are machines used? Ans: A machine is a tool that makes our work easier . It helps us to overcome a larger force (required to move …
Read More
What Are Machines There are many tasks that we cannot do ourselves, or we may need to put in a lot of time and effort to do them. To do …
Read More
There are mainly 6 types of simple machines. A lever Pulley Wheel and axle Wedge Screw Inclined plane Lever A lever is a simple machine consisting of a rigid rod …
Read More
Based on the position of the Fulcrum (pivot), Load, and Effort, Levers are of the following three kinds. First class Lever / Class one Lever (Load -Fulcrum – Effort …
Read More
Force What is Force ? A force is a push or pull upon an object which results from the object’s interaction with another object. Whenever there is an interaction between …
Read More
Types of Energy Mechanical Energy The energy of an object due to its motion or position is called mechanical energy. Example: a moving car or a hammer hitting a nail …
Read More
Difference Between Work And Energy Work Energy Work is the …
Read More