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प्रश्न
Classify the following as a lever, a pulley and an inclined plane:
A crane
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उत्तर
A crane – A pulley
संबंधित प्रश्न
What do you understand by a machine?
Answer the following.
What do you understand by a complex machine?
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
Why is a machine not 100% efficient?
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.
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
What is the efficiency of an ideal machine?
Classify the following as a lever, a pulley and an inclined plane:
A staircase
Why is this so traveller’s bags have wheels?
Simple machines usually exchange a larger force to move a heavy object.
