Gravitational Constant (G)

The strength of the gravitational force depends on the gravitational constant.Any mass warps the fabric of space-time around itself and more the mass, the more the warping.

Gravity – It is the force that an object feels when travelling along the warped path which tends to move the object towards the mass.
Gravitational constant – It is denoted by a ‘G’, a fundamental physical constant.

Gravitation constant was 1^st accurately determined by Henry Cavendish in 1797 and it is an essential component of both Isaac Newton’s law of universal gravitation and Albert Einstein’s theory of general relativity.

Newton’s theory – The gravitational force between 2 objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

G is the proportionality constant whose value is 6.673 × 10–11 N m2 kg–2.

Einstein’s theory of general relativity – It states that space and time are relative, and all motion must be relative to a frame of reference.

It provides a more accurate description of gravitation, particularly in extreme conditions like massive celestial objects.
G describe the curvature (or the ‘warping’) of space-time in the presence of mass and energy.

Importance of G – The precise value of G is crucial to understand celestial mechanics and to determine the mass of celestial bodies.

Yet its value has been determined only with an uncertainty of about 22 parts per million.

Source:

Join Our Telegram

Adaptation Gap Report, 2023

Biosphere Reserves

Anti-Defection Law in India

18 Mar, 26
SHARE

The Supreme Court of India recently gave a final three-week deadline to the Telangana Assembly Speaker to decide pending disqualification petitions against defecting MLAs under the Anti-Defection Law. What is the Anti-Defection Law? The Anti-Defection Law was introduced through the 52nd Amendment (1985), which added the Tenth Schedule to the

Rat-Hole Mining

18 Mar, 26
SHARE

A major disaster unfolded in East Jaintia Hills, Meghalaya, when at least 18 workers died following an explosion in an illegally operating rat-hole coal mine. This incident highlights the continued prevalence of rat-hole mining despite bans imposed by the National Green Tribunal (NGT) and the Supreme Court of India. Rat-hole mining is driven

India’s Aviation Sector

17 Mar, 26
SHARE

India’s aviation sector has grown rapidly, becoming a major economic success story. However, regulatory oversight has not evolved at the same pace. Data-driven monitoring of fares and market behavior is essential to ensure fair competition, prevent market abuse, and shift from reactive crisis management to proactive regulation. Challen

Federalism in India

14 Mar, 26
SHARE

Recently, a high-level committee on Union–State relations submitted its first report to the Government of Tamil Nadu. The report examines the distribution of powers and responsibilities between the Union and the States, highlighting ongoing debates regarding the balance between central authority and state autonomy. This discussion is clos

India–UAE Economic Partnership

14 Mar, 26
SHARE

The relationship between India and the United Arab Emirates has evolved from a traditional energy-based partnership into a comprehensive economic and strategic relationship. Over the years, strong political trust, growing trade, and expanding investments have transformed bilateral ties into a diversified economic corridor. The economic partnership