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प्रश्न
Name some simple machines.
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उत्तर
Simple machines are pulley, wedge, inclined plane, screw, lever, wheel, and axle.
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संबंधित प्रश्न
What is the principle on which a machine works?
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
Write an expression for the mechanical advantage of an inclined plane in terms of its length I and vertical height h.
Define simple machine.
Write an expression to show the relationship between mechanical advantage, velocity ratio, and efficiency for a simple machine.
Give an example of the following use of a machine to obtain gain in force.
A uniform metre scale is kept in equilibrium when supported at the 60 cm mark and a mass M is suspended from the 90 cm mark as shown in the figure. State with reasons, whether the weight of the scale is greater than, less than or equal to the weight of mass M.
The ______ in the centre, the ______ on one side and the ______ on the other side make a lever of the second order.
Identify and mention the types of simple machines.
 |
 |
 |
| ______ | ______ | _______ |
 |
 |
 |
| ______ | ______ | ______ |
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.
