The gravitational constant $G$ appears in Newton's Law of Universal Gravitation, which states that the force ($F$) between two masses ($m_1$, $m_2$) separated by a distance ($r$) is given by $F = G \frac{m_1 m_2}{r^2}$.
What is the dimension of gravitational constant?
Asked in UPSC NDA 1 2022 · Topic: Mechanics (Gravitation and Central Force Motion (Kepler's Laws))
More Physics questions
- Which one of the following statements is true ?
- Which of the following forces is/are fundamental in nature? 1. Gravitational force 2. Electromagnetic forces 3. Strong and weak nuclear forces Select the correct answer using the code given below:
- The electromagnetic force: Acts between electrically charged particles (includes electric and magnetic forces). 3. The strong nuclear force: Binds quarks together to form protons and neutrons, and holds the nucleus of an atom together. 4. The weak nuclear force: Responsible for radioactive decay, such as beta decay. 167. Escape speed from the Earth is close to 11.2 km s⁻¹. On another planet whose radius is half of the Earth's radius and whose mass density is four times that of the Earth, the escape speed in km s⁻¹ will be close to :
- The acceleration due to gravity 'g' for objects on or near the surface of earth is related to the universal gravitational constant 'G' as ('M' is the mass of the earth and 'R' is its radius):
- The free fall acceleration g increases as one proceeds, at sea level, from the equator toward either pole. The reason is
- A planet has a mass M₁ and radius R₁. The value of acceleration due to gravity on its surface is g₁. There is another planet 2, whose mass and radius both are two times that of the first planet. Which one of the following is the acceleration due to gravity on the surface of planet 2?
- Two bodies of mass M each are placed R distance apart. In another system, two bodies of mass 2M each are placed $\frac{R}{2}$ distance apart. If F be the gravitational force between the bodies in the first system, then the gravitational force between the bodies in the second system will be
- The masses of two planets are in the ratio of 1 : 7. The ratio between their diameters is 2 : 1. The ratio of forces which they exert on each other is