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प्रश्न
Which machine will you use to do the following work? Write their type.
To remove the lid of a tin.
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उत्तर
To remove the lid of a tin, a tin opener or can opener, which is a second-order lever machine, is used.
संबंधित प्रश्न
What is the principle on which a machine works?
State if the following statement is true or false. Correct the statement if it is false.
There are four types of simple machines.
Give a reason for the following.
Machines are able to make our work convenient.
State whether the mechanical advantage of an inclined plane is equal to 1, less than 2 or greater than 1?
What is an ideal machine?
A cook used a ‘fire tong pair’ of length 32 cm. to lift a piece of burning coal of mass 500 g. If he applies his effort at a distance of 8 cm from the fulcrum, what is his effort? Assume friction etc. to be absent. Also, obtain values of the M.A. and the V.R. of this ‘machine’.
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the first order.
Why is this so machines have to be maintained?
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
