Advertisements
Advertisements
प्रश्न
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
उत्तर
To lift bricks to the top of a tall building, we should use a crane, which is a pulley.
संबंधित प्रश्न
State if the following statement is true or false. Correct the statement if it is false.
There are four types of simple machines.
What do you understand by a simple machine?
Can a machine be 100% efficient?
Give an example where a machine is used to obtain gain in speed.
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
Write an expression for the mechanical advantage of an inclined plane.
What is the relationship between the mechanical advantage and the velocity ratio for:
(i) An ideal machine,
(ii) A practical machine.
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Why is this so traveller’s bags have wheels?
Simple machines usually exchange a larger force to move a heavy object.
