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What is the principle of a physical balance? - Physics

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प्रश्न

What is the principle of a physical balance?
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उत्तर

A physical balance works on the principle of moments. According to the principle of moments, under equilibrium condition, the clockwise moment due to the body on one side of the beam equals the anti-clockwise moment due to standard weights on the other side of the beam.
 
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Measurements
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अध्याय 1: Measurement - Exercise 5 [पृष्ठ ४७]

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फ्रैंक Physics [English] Class 9 ICSE
अध्याय 1 Measurement
Exercise 5 | Q 27 | पृष्ठ ४७

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Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below. Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following question.

  1. Find the ratio of masses of spheres A and B.
  2. Find the ratio of volumes of spheres A and B.
  3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below.

Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

 

Now answer the following questions.

  1. Find the ratio of masses of spheres A and B.
  2. Find the ratio of volumes of spheres A and B.
  3. Find the ratio of masses of spheres A and C.

Questions based on Higher Order Thinking Skills:

There are three spheres A, B, C as shown below.
Sphere A and B are made of same material. Sphere C is made of a different material. Spheres A and C have equal radii. The radius of sphere B is half that of A. Density of A is double that of C.

Now answer the following questions.

i. Find the ratio of masses of spheres A and B.
ii. Find the ratio of volumes of spheres A and B.
iii. Find the ratio of masses of spheres A and C. 


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