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प्रश्न
State whether the following statement is True or False.
A boy does work while pushing a wall.
विकल्प
True
False
उत्तर
False.
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संबंधित प्रश्न
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 is an ideal machine?
Why is a machine not 100% efficient?
Derive the relationship between mechanical advantage, velocity ratio and efficiency of a machine.
What is an inclined plane?
Define Simple machine
Can a simple machine act as a force multiplier and a speed multiplier at the same time?
What is the efficiency of a machine?
(i) Calculate the mechanical advantage of the lever shown in the figure.
(ii) How do you define the mechanical advantage of a machine?
Which machine will you use to do the following work? Write their type.
To lift bricks to the top of a tall building.
