Advertisements
Advertisements
प्रश्न
Define the term ‘work input’ and ‘work output’ in relation to a machine.
Advertisements
उत्तर
Work input is work done on a machine equal to the effort force times the distance through which the force is applied.
Work output is work that is done by a machine and equals resistance force times the distance through which the force is applied.
For an ideal machine, the work output is equal to the work input, i.e., the efficiency.
APPEARS IN
संबंधित प्रश्न
Name six simple machines. Give an example of each machine.
Answer the following in short.
Mention any two methods by which we can take care of machines.
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.

Give two examples of inclined plane where it is used to raise a heavy load with less effort ?
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
What is an ideal machine?
Can a machine be 100% efficient?
Define Mechanical advantage
Which machine will you use to do the following work? Write their type.
To cut vegetables.
The idea of a simple machine originated with the Greek philosopher Archimedes.
