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प्रश्न
State two conditions for a body acted upon by several forces to be in equilibrium.
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उत्तर
Conditions for equilibrium:
- The resultant of all the forces acting on the body should be equal to zero.
- When all forces are applied to the body around the rotational point, the resultant moment should be zero.
संबंधित प्रश्न
In a beam balance, when the beam is balanced in a horizontal position, it is 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?
What do you mean by the state of equilibrium? What are the conditions for stable equilibrium?
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?
Give scientific reason for the following:
While climbing a hill you will try to bend your body forward.
A faulty balance of unequal arms and pans of unequal weights is used to find the true weight of a metal. By double weighing the weights are found to be 1210 g and 1000 g. Calculate the true weight of the metal.
The moon revolving around the earth is in ______ equilibrium.
State two conditions when the work done by a force acting on a body is zero.
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.
