Advertisements
Advertisements
प्रश्न
Why is this so traveller’s bags have wheels?
उत्तर
A traveler's bag has wheels so that it can be dragged easily because of reduced friction between the ground and the wheel. Thus, the wheel, a simple machine, helps to decrease the effort to be applied to the load, which is a bag here.
संबंधित प्रश्न
State whether the following statement is True or False.
In an ideal machine, work done on load is equal to the work done by effort.
Can a machine have an efficiency of 100%? Give a reason to support your answer.
What do you understand by a simple machine?
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.
Write the relation between mechanical advantage, velocity ratio and efficiency.
Define Simple machine
What is the efficiency of an ideal machine?
Classify the following as a lever, a pulley and an inclined plane:
A wedge
Classify the following as a lever, a pulley and an inclined plane:
A needle
The idea of a simple machine originated with the Greek philosopher Archimedes.
