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Question

What is the standard unit of measuring weight?


A

gram

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B

Newton

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C

meter

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D

second

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Solution

The correct option is B

Newton


Step 1: Weight

  1. Weight is defined as the gravitational force with which the Earth attracts the masses towards its center.
  2. It is denoted by W.
  3. The mathematical expression for weight is W=mg, where W is the weight, m is the mass, g=9.8m/s2is the acceleration due to gravity.
  4. Weight is a vector quantity, directed toward the center of the earth.

Step 2: SI unit of weight

  1. Newton is the SI unit of weight, as weight is force.
  2. Dimension of weight is [M1L1T-2].

Step 3: An illustrative diagram of weight

Therefore, option B is correct.


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