Advertisements
Advertisements
प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
पर्याय
True
False
Advertisements
उत्तर
False.
Work done by a machine is always less than the work done on a machine.
APPEARS IN
संबंधित प्रश्न
Can a machine have an efficiency of 100%? Give a reason to support your answer.
A machine is 75% efficient’. What do you understand by this statement?
What is the purpose of a jack in lifting a car by it?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
What is an ideal machine?
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Establish a relationship between efficiency, M.A., and V.R.
Why is this so traveller’s bags have wheels?
Name the levers mentioned in the following passage. Identify the fulcrum, load, and effort of each and say which type of lever it is.
Ravi and Savita sit on a seesaw in a garden. In the meantime, a gardener is trimming trees in the garden. He puts the leaves and other garbage in the wheelbarrow. Later, Ravi gets thirsty and he buys lemon sherbet. The sherbet seller cuts the lemon and squeezes it using a lemon squeezer. He puts small pieces of ice in the glass with the help of the tongs.
The idea of a simple machine originated with the Greek philosopher Archimedes.
