Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
By the principle of moments 30 × 2 = x × 40
∴ Other boys should sit at a distance
x =`(30xx2)/40`
= 1.5 m
APPEARS IN
संबंधित प्रश्न
What do you mean by an equilibrium of a body?
State the condition when a body is in dynamic 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.
Give scientific reason for the following:
When a man climbs a slope he bends 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.
In equilibrium algebraic sum of moments of all forces about the point of rotation is ______.
State the principle of moments.
What is meant by equilibrium?
What are the three types of stability of an object?
Mention any two conditions for the stability of a body?
