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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
State whether the following statement is True or False.
A machine performs work by itself.
State whether the following statement is True or False.
In an ideal machine, work done on load is equal to the work done by effort.
What care would you take to increase the life span of a machine which you use?
What do you understand by a simple machine?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
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)?
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
Classify the following as a lever, a pulley and an inclined plane:
Nutcrackers
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
______ help us to make work easier.
