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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
A needle
उत्तर
A needle – An inclined plane
संबंधित प्रश्न
What do you understand by a 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.
Can a machine be 100% efficient?
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
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.
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
What is a lever? How are the orders of the lever determined?
