Physics
Grade-10
Easy

Question

Calculate the force of gravitation due to earth on a man weighing 100 kg standing on the ground? (Mass of earth equals 6 cross times 10 to the power of 24 space kg, Radius of the earth equals 6.4 cross times 10 cubed space km)

  1. 977 N
  2. 1000 N
  3. 1230 N
  4. 1524 N

hintHint:

Use the formula of gravitational force.

The correct answer is: 977 N


    The correct option is a)977 N.
    Given, m= 100Kg
    Mass of earth = 6 x 1024 
    Gravitational constant= 6.67 x 10-11
    We will use the formula,
    F equals space fraction numerator G M m over denominator R squared end fraction
F equals space fraction numerator 6.67 x space 10 to the power of negative 11 space end exponent x space 6 space x space 10 to the power of 24 space end exponent x space 100 over denominator 6.4 space x space 10 cubed end fraction
    F = 977 N 

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