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Q46 (NDA-II/2011) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic mechanics concepts Answer Verified

Which one among the following is the correct value of the gravitational force of the Earth acting on a body of mass 1 kg?

Result
Your answer: —  ·  Correct: B
Explanation

The gravitational force acting on an object, commonly referred to as its weight, is calculated using the formula W = mg, where 'm' is the mass and 'g' is the acceleration due to gravity [t4][t5]. On Earth, the standard acceleration of gravity is defined as approximately 9.80665 m/s² [t1][t6]. For a body with a mass of 1 kg, the force is calculated as 1 kg multiplied by 9.8 m/s², resulting in a weight of 9.8 Newtons [t2][t7]. While local variations in gravity (anomalies) exist due to factors like latitude and altitude, 9.8 N is the widely accepted standard value for general scientific calculations near the Earth's surface [t3][t6]. Therefore, the correct value for the gravitational force acting on a 1 kg mass is 9.8 N.

Sources

  1. [1] https://en.wikipedia.org/wiki/Standard_gravity
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