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प्रश्न
Which machine will you use to do the following work? Write their type.
To draw water from a well.
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उत्तर
To draw water from a well, we should use a pulley system or wheel-axle.
संबंधित प्रश्न
When is work said to be done by a force?
Name six simple machines. Give an example of each machine.
Define the term ‘work input’ and ‘work output’ in relation to a machine.
The correct relationship between the mechanical advantage (M.A.), the velocity ratio (V.R.) and the efficiency (n) is ______.
Give two examples of inclined plane where it is used to raise a heavy load with less effort ?
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)?
Define mechanical advantage (M.A.) of the machine.
Classify the following as a lever, a pulley and an inclined plane:
A slide
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
Why is this so traveller’s bags have wheels?
