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.
विकल्प
True
False
Advertisements
उत्तर
False.
Work done by a machine is always less than the work done on a machine.
APPEARS IN
संबंधित प्रश्न
State whether the following statement is True or False.
A machine performs work by itself.
Give a reason for the following.
Machines are able to make our work convenient.
A crowbar of length 120 cm has its fulcrum situated at a distance of 20 cm from the load. Calculate the mechanical advantage of the crowbar.
Give an example of the following use of a machine to obtain gain in force.
What is the efficiency of a machine?
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Classify the following as a lever, a pulley and an inclined plane:
A knife
Why is this so traveller’s bags have wheels?
The idea of a simple machine originated with the Greek philosopher Archimedes.
A pair of scissors is a _____ multiplier.
