Pdf Download Chapter 9 Simple Mechanics physics class 10 notes for Sindh board short question, long question, and Mcqs best and high-quality format.
What is a machine?
A machine is a device by which we can overcome resistance by applying a relatively small force in a convenient position and in the desired direction or by gaining an advantage in speed.
What is the efficiency of an ideal machine?
The performance of an ideal machine is 1 (or 100%).