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प्रश्न
Name a machine to change the point of application of force ?
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उत्तर
To change the point of application of force: the wheel of a cycle is rotated with the help of a chain by applying the force on the pedal.
संबंधित प्रश्न
What is the principle of an ideal machine?
Two forces each of 5N act vertically upwards and downwards respectively on the two ends of a uniform metre rule which is placed at its mid-point as shown in the diagram. Determine the magnitude of the resultant moment of these forces about the midpoint.
Draw a diagram to show how a single pulley can be used so as to have its ideal M.A= 2.
State four ways in which machines are useful to us.
Mechanical advantage (M.A.), load (L) and effort (E) are related as ______.
Name a machine which is used to multiply speed ?
The diagram below shows a claw hammer used to remove a nail :
(i) To which class of lever does it belong ?
(ii) Give one more example of the same class of lever mentioned by you in (i) for which the mechanical advantage is greater than one.
Give an example for each of the following uses of a machine:
to obtain gain in force,
Shows a lemon crusher.
- In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E.
- Name the class of lever
Complete the following sentence :
A scissors is a ___________ multiplier.
