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प्रश्न
Give an example of the following uses of a machine:
to change the direction of force
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उत्तर
A pulley is used to change the direction of application of force.
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संबंधित प्रश्न
How does the magnitude of this non-contact force on the two bodies depend on the distance of separation between them?
Name the factors affecting the turning effect of a body
State the effect of force F in of the following diagram.
The hand flour grinder is provided with a handle near the rim.
It is easier to open the door by pushing it at its free end.
What is thrust?
Classify the following amongst contact and non-contact forces.
gravitation force
State the units of moment of force.
Write the expression for calculating the moment of force about a given point.
The diagram in Fig shows two forces F1 = 5 N and F2 = 3 N acting at points A and B respectively of a rod pivoted at a point O, such that OA = 2 m and OB = 4 m.
Calculate:
- the moment of force F1 about O.
- the moment of force F2 about O.
- total moment of the two forces about O.
