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
Let the mass of 50 g be situated at distance 'd' from the mid-point i.e. at 50cm,
80 x 30 = (40 x 10) + (50 x d)
2400 = 400 + 50d
or 50d = 2000
or d = 40cm to the right of the mid-point.
APPEARS IN
संबंधित प्रश्न
State the principle of moments. Give one device as an application of it
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.
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?
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.
How can we increase the stability of an object?
What are the three types of stability of an object?
Mention any two conditions for the stability of a body?
When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides ______ force necessary for circular motion.
