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प्रश्न
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
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उत्तर
The fulcrum in the centre, the load on one side and the effort on the other side make a lever of the first order.
संबंधित प्रश्न
Answer the following.
What do you understand by a complex machine?
Give a reason for the following.
Machines are able to make our work convenient.
Derive the relationship between mechanical advantage, velocity ratio and efficiency of 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.
Write the relation between mechanical advantage, velocity ratio and efficiency.
Give scientific reason for the following:
Passengers in a bus are pushed backward when it starts suddenly.
What is the efficiency of a machine?
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
A simple machine enables us to lift a load of 10,000 N by the application of an effort of 500 N. However, when the point of application of the effort moves through 2.5 m, the load gets raised through 10 cm only. What are the values of the:
(i) M.A.
(ii) V.R. and
(iii) Efficiency of the machine?
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
