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प्रश्न
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
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उत्तर
The load in the centre, the fulcrum on one side and the effort on the other side make a lever of the second order.
संबंधित प्रश्न
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
Give a reason for the following.
Machines are able to make our work convenient.
What is the purpose of a jack in lifting a car by it?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
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.
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
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 hold a papad for roasting it.
