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प्रश्न
State the principle of moments. Give one device as an application of it
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उत्तर
According to the principle of moments, if the algebraic sum of moments of all the forces acting on the body about the axis of rotation is zero, the body is in equilibrium. A physical balance (or beam balance) works on the principle of moments.
संबंधित प्रश्न
State the condition when a body is in static equilibrium.
State two condition for a body acted upon by several forces to be in equilibrium.
The figure shows a uniform metre rule placed on a fulcrum at its mid-point O and having a weight 40 gf at the 10 cm mark and a weight of 20 gf at the 90 cm mark.
- Is the metre rule in equilibrium? If not how will the rule turn?
- How can the rule be brought in equilibrium by using an additional weight of 40 gf?
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
State the principle of moments.
Explain why It is easier to knock down a boy who is standing on one foot than one who is standing on two.
One end of a spring is kept fixed while the other end is stretched by a force as shown in the diagram.
(i) Copy the diagram and mark on it the direction of the restoring force.
(ii) Name one instrument which works on the above principle.
Explain the types of stability with suitable examples.
What are the three types of stability of an object?
