Advertisements
Advertisements
Question
What is the principle on which a machine works?
Solution
Principle of a Machine: The work output of a machine is equal to the work input.
APPEARS IN
RELATED QUESTIONS
Select the correct alternative:
For an ideal machine, the efficiency is
When is work said to be done by a force?
Answer the following.
What do you understand by a complex machine?
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
A cook used a ‘fire tong pair’ of length 32 cm. to lift a piece of burning coal of mass 500 g. If he applies his effort at a distance of 8 cm from the fulcrum, what is his effort? Assume friction etc. to be absent. Also, obtain values of the M.A. and the V.R. of this ‘machine’.
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
Which machine will you use to do the following work? Write their type.
To draw water from a well.
What is meant by simple machines?
