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प्रश्न
State two condition for a body acted upon by several forces to be in equilibrium.
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उत्तर
For a body to be in equilibrium:
1) The resultant of all the forces acting on the body should be equal to zero.
2) The resultant moment of all the forces acting on the body about the point of rotation should be zero.
संबंधित प्रश्न
Define 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.
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.
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
In figure, a uniform bar of length l m is supported at its ends and loaded by a weight W kgf at its middle. In equilibrium, find the reactions R1 and R2 at the ends.
`["Hint:" "In equilibrium" "R"_1 + "R"_2 = "W" "and" "R"_1 xx l/2 = "R"_2 xx l/2]`
State the principle of moments.
Explain when we carry weight, on one hand, we bend on the other side.
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.
