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प्रश्न
Which machine will you use to do the following work? Write their type.
To cut vegetables.
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उत्तर
To cut vegetables, we should use a knife.
Type: Wedge (simple machine)
संबंधित प्रश्न
Answer the following in short.
Mention any two methods by which we can take care of machines.
What do you understand by a simple 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.
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
Write the relation between mechanical advantage, velocity ratio and efficiency.
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.
Give an example of the following use of a machine to change the point of application of the force.
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
What is a lever?
A pair of scissors is a _____ multiplier.
