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प्रश्न
What is meant by equilibrium and state the conditions of equilibrium of a body?
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उत्तर
When a number of forces acting on a body produce no change in its state of rest or of uniform motion the body is said to be in equilibrium.
The two conditions of equilibrium of a body:
(i) The resultant of all the forces acting on the body should be equal to zero.
(ii) The resultant moment of all the forces acting on the body about a point should be zero.
संबंधित प्रश्न
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?
A meter scale is pivoted at its mid point and a 50 g mass suspended from the 20 cm mark. What mass balances the ruler when suspended from 65 cm mark?
What makes a balance faulty?
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
State the principle of moments.
State two conditions when the work done by a force acting on a body is zero.
What do you mean by dynamic and static equilibrium? Give one example of each.
Explain the types of stability with suitable examples.
What are the three types of stability of an object?
Give one example of static equilibrium.
