Advertisements
Advertisements
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.
Advertisements
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
APPEARS IN
संबंधित प्रश्न
State two condition for a body acted upon by several forces to be in equilibrium.
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.
Explain when we carry weight, on one hand, we bend on the other side.
What is the weight of a body placed at the centre of the earth?
What is a couple?
One end of a spring is kept fixed while the other end is stretched by a force as shown in the diagram.
(i) Copy the diagram and mark on it the direction of the restoring force.
(ii) Name one instrument which works on the above principle.
Give an experiment to verify the principle of moments.
Explain the concept which is used in the continuous movement of the Thanjavur doll?
