Advertisements
Advertisements
Questions
What do you mean by static equilibrium? Give one example.
What is static equilibrium? Give an example.
Advertisements
Solution
When a body remains in the state of rest under the influence of applied forces, it is said to be in static equilibrium.
Example: In a beam balance, when the beam is balanced in the horizontal position, the clockwise and anti-clockwise moments balance each other and the beam has no rotational motion.
APPEARS IN
RELATED QUESTIONS
State the principle of moments. Give one device as an application of it
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.
State the principle of moments. A meter scale is pivoted at 30 cm mark and it is in equilibrium when a mass of 40 g is suspended from 10 cm mark. Calculate the mass of the ruler.
Give scientific reason for the following:
In a moving bus the standing passenger stands keeping both his legs apart.
State the principle of moments.
Explain when we carry weight, on one hand, we bend on the other side.
A boy of mass 30 kg is fitting at a distance of 2 m from the middle of a see-saw. Where should a boy of mass 40 kg sit so as to balance the see-saw?
Mention any two conditions for the stability of a body?
