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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
State whether the following statement is True or False.
A machine performs work by itself.
Fill in the blank:
The useful work done by an actual machine is always ............ than the work done on the machine.
Define the term ‘work input’ and ‘work output’ in relation to a machine.
What do you understand by a simple machine?
The mechanical advantage of an inclined place is always:
(a) less than 1
(b) equal to 1
(c) greater than 1
(d) nothing can be said
What is an ideal machine?
Classify the following as a lever, a pulley and an inclined plane:
The wheel of a flagpole
Which machine will you use to do the following work? Write their type.
To hold a papad for roasting it.
Why is this so machines have to be maintained?
Name a machine for each of the following uses:
- to multiply the force,
- to change the point of application of force,
- to change the direction of force,
- to obtain the gain in speed.
