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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
Answer the following.
What is a machine?
State if the following statement is true or false. Correct the statement if it is false.
There are four types of simple machines.
show a nut cracker In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E .
Give two examples of inclined plane where it is used to raise a heavy load with less effort ?
Give an example of the following uses of a machine:
to obtain gain in speed
Fig show a system of four pulleys. The upper two pulleys are fixed and the lower two are movable.
(i) Draw a string around the pulleys. Also show the place and direction in which the effort is applied.
(ii) What is the velocity ratio of the system?
(iii) What is the mechanical advantage of the system?
(iv) What assumption do you make in arriving at your answer in part (iii)?
Give an example where a machine is used to obtain gain in speed.
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 third order.
Which machine will you use to do the following work? Write their type.
To draw water from a well.
