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प्रश्न
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.
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उत्तर
Principle of moments : If a body is in equilibrium under the action of number of force, then the sum of clockwise moments is equal to the sum of anticlockwise moments.
Sum of clockwise moments = sum of anticlockwise moments
40 x 20 cm = mass of scale x 30 cm
or Mass of scale = `800/30` = 26.7 g
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संबंधित प्रश्न
State the condition when a body is in static equilibrium.
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
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The arms of a beam balance are 20 cm and 21 cm, but the pans are of equal weight. By the method of double weighing the weights are found to be 1000 g and 20 g. Find the actual weight of the body
The moon revolving around the earth is in ______ equilibrium.
Define the term momentum.
What do you mean by dynamic and static equilibrium? Give one example of each.
Explain the types of stability with suitable examples.
Give one example of static equilibrium.
Give one example of dynamic equilibrium.
