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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
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
State if the following statement is true or false. Correct the statement if it is false.
There are four types of simple machines.
State the kind of lever which always has mechanical advantage less than 1. Draw a labelled diagram of such a lever.
Fig. shows a spade. It is being used to lift soil weighing 30N from the ground.
(a) Mark the direction of the least force on the handle necessary to keep the spade balanced.
(b) Calculate the least force on the handle necessary to keep the spade balanced (the weight of the spade is negligible).
(c) If the left hand was move towards the soil on the spade, would the force on the handle necessary to keep the soil balance the greater or less? Give a reason for your answer.
(d) To which class of lever does the spade belong?
Classify the following as a lever, a pulley and an inclined plane:
A needle
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
Why is this so traveller’s bags have wheels?
Simple machines makes work easier by trading ______ for force.
