Advertisements
Advertisements
प्रश्न
What is the weight of a body placed at the centre of the earth?
Advertisements
उत्तर
The weight of a body placed at the centre of the earth is zero as
g = 0
∴ W = mg
= 0
संबंधित प्रश्न
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?
Give scientific reason for the following:
In a moving bus the standing passenger stands keeping both his legs apart.
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 two conditions when the work done by a force acting on a body is zero.
What is meant by equilibrium?
A boy of mass 30 kg is fitting at a distance of 2 m from the middle of a see-saw. Where should a boy of mass 40 kg sit so as to balance the see-saw?
Give an experiment to verify the principle of moments.
Mention any two conditions for the stability of a body?
Explain the concept which is used in the continuous movement of the Thanjavur doll?
