Question

state the formula unit and magnitude of universal gravitational constant

Answer 1

Unit of gravitational constant ;

G = F × r^2 / m1 × m2

G = N × m^2 / Kg ^2

G = N m^2 Kg ^-2

Magnitude of G = 6.67 × 10 ^-11 N m^2 Kg ^-2

PLEASE MARK IT BRAINLIEST

Answer 2

Gravitational force is directly proportional to product of mass of bodies and inversely proportional to square of separation between bodies.

e.g., $F\propto\frac{m_1m_2}{r^2}$

or, F = $G\frac{m_1m_2}{r^2}$

here G is proportionality constant, is known as gravitational constant.

here, $F=G\frac{m_1m_2}{r^2}\implies G=\frac{Fr^2}{m_1m_2}$

unit of F = Newton , N
unit of r = metre , m
unit of mass = kilogram, kg

so, unit of G = Nm²/kg² or Nm² kg^-2

experimentally, value of G = 6.67 × 10^-11 Nm²/kg²