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प्रश्न
State the condition when a body is in dynamic equilibrium.
State the condition when a body is in dynamic equilibrium. Give one example.
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उत्तर
A body is in dynamic equilibrium when it remains in its state of uniform motion (constant linear or rotational speed) under the influence of several acting forces. The net external force and net torque acting on it must be zero.
Example: An airplane flying at a constant speed and altitude.
संबंधित प्रश्न
State the condition when a body is in static 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?
A uniform meter scale is in equilibrium as shown in the diagram :
(i) Calculate the weight of the meter scale.
(ii) Which of the following options is correct to keep the ruler in equilibrium when 40 gf wt is shifted to 0 cm mark ?
F is shifted towards 0 cm
or
F is shifted towards 100 cm
State two conditions for a body acted upon by several forces to be in equilibrium.
What do you mean by the state of equilibrium? What are the conditions for stable equilibrium?
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
What is a couple?
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?
Explain the types of stability with suitable examples.
Give one example of dynamic equilibrium.
