Advertisements
Advertisements
प्रश्न
Why is this so traveller’s bags have wheels?
Advertisements
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
What is an ideal machine?
Can a machine have an efficiency of 100%? Give a reason to support your answer.
Give a reason for the following.
Machines are able to make our work convenient.
What is the relationship between the mechanical advantage and the velocity ratio for:
- An ideal machine,
- A practical machine.
Classify the following as a lever, a pulley and an inclined plane:
A slide
Classify the following as a lever, a pulley and an inclined plane:
A crane
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the third order.
Why is this so machines have to be maintained?
Name some simple machines.
A pair of scissors is a _____ multiplier.
