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प्रश्न
What is the weight of a body placed at the centre of the earth?
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उत्तर
The weight of a body placed at the centre of the earth is zero as
g = 0
∴ W = mg
= 0
संबंधित प्रश्न
What do you mean by an equilibrium of a body?
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
Give scientific reason for the following:
While climbing a hill you will try to bend your body forward.
A faulty balance of equal arms but pans of unequal weight is used to find the weight of a body. By the method of double weighing the weights are found as 8 kg and 8.2 kg. Find the actual weight of the body.
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.
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
Explain the concept which is used in the continuous movement of the Thanjavur doll?
Give one example of static equilibrium.
