What is the importance of the universal law of Gravitation?

Collegedunia Team logo

Collegedunia Team

Content Curator

According to the Universal Law of Gravitation, every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them.

The importance of the Universal Law of Gravitation is as follows:

  • It explains the phenomenon of revolutions of heavenly bodies: All heavenly bodies or celestial bodies like planets and satellites move in an elliptical orbit due to gravitational force. 
  • It tells us about the force that is responsible for binding us to the earth: The gravitational force of attraction between the earth and us helps to keep us on the ground. Since the mass of the earth is very large compared to us, so we are attracted to the earth.
  • It explains the formation of tidal waves: Ocean tides result from the rise and fall of water levels due to the gravitational force exerted by both the sun and moon.
  • A planet's orbit around the sun, a moon's orbit around the Earth, and an artificial satellite's orbit around the Earth are all explained by the law of gravitation.
  • Rainfall, snowfall, and the flow of water in rivers on the planet are also explained by the universal law of gravitation.

Read More:

CBSE CLASS XII Related Questions

1.
Two charges 5 × 10–8 C and –3 × 10–8 C are located 16 cm apart. At what point(s) on the line joining the to charges is the electric potential zero? Take the potential at infinity to be zero.

      2.

      A tank is filled with water to a height of 12.5cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?

          3.

          A parallel plate capacitor made of circular plates each of radius R = 6.0 cm has a capacitance C = 100 pF. The capacitor is connected to a 230 V ac supply with a (angular) frequency of 300 rad s−1.

          1. What is the rms value of the conduction current?
          2. Is the conduction current equal to the displacement current?
          3. Determine the amplitude of B at a point 3.0 cm from the axis between the plates.
          A parallel plate capacitor made of circular plates

              4.

              Three capacitors each of capacitance 9 pF are connected in series. 

              (a) What is the total capacitance of the combination? 

              (b) What is the potential difference across each capacitor if the combination is connected to a 120 V supply?

                  5.
                  A series LCR circuit with R = 20 W, L = 1.5 H and C = 35 μF is connected to a variable-frequency 200 V ac supply. When the frequency of the supply equals the natural frequency of the circuit, what is the average power transferred to the circuit in one complete cycle?

                      6.
                      A convex lens of glass is immersed in water compared to its power in air, its power in water will

                        • increase
                        • decrease
                        • not change
                        • decrease for red light increase for violet light
                        CBSE CLASS XII Previous Year Papers

                        Comments



                        No Comments To Show