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प्रश्न
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?
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उत्तर
Let mass 'm' be suspended from 65 cm mark so as to balance the metre scale.
In balanced condition.
sum of clockwise moments = sum of anticlockwise moments
50 x (50 - 20) = m x (65 - 50)
or, 50 x 30 = m x 15
or, m = `1500/15` = 100g
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संबंधित प्रश्न
State the condition when a body is in dynamic 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
State two conditions for a body acted upon by several forces to be in equilibrium.
Give scientific reason for the following:
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Give one example of static equilibrium.
