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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
State the condition when a body is in dynamic equilibrium.
State two conditions for a body acted upon by several forces to be in equilibrium.
A faulty balance of equal arms but pans of unequal weight is used to find the weight of a body. By the method of double weighing the weights are found as 8 kg and 8.2 kg. Find the actual weight of the body.
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.
State two conditions when the work done by a force acting on a body is zero.
A ball is placed on a compressed spring. When the spring is released, the ball is observed to fly away.
(i) What form of energy does the compressed spring possess?
(ii) Why does the ball fly away?
Give an experiment to verify the principle of moments.
Give one example of dynamic equilibrium.
