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 do you understand by a machine?
What do you understand by a simple machine?
The diagram below shows a wheel barrow. Mark position of fulcrum F and draw arrows to show the directions of load L and effort E. What class of lever is the whell barrow? Give one more example of the same class of lever.
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
Define Simple machine
Define Velocity Ratio
Give an example of the following use of a machine to obtain gain in force.
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Name a machine for each of the following uses:
- to multiply the force,
- to change the point of application of force,
- to change the direction of force,
- to obtain the gain in speed.
