A rotation is when the earth turns in a circle on it’s axis. A revolution is the oblong path the the earth is constantly moving in around the sun. A revolution takes 365.25 days where as a rotation happens in 24 hours.

As the Earth rotates, it also moves, or revolves, around the Sun. The Earth’s path around the Sun is called its orbit. It takes the Earth one year, or 365 1/4 days, to completely orbit the Sun. As the Earth orbits the Sun, the Moon orbits the Earth.

“Rotation” refers to an object’s spinning motion about its own axis. “Revolution” refers the object’s orbital motion around another object. For example, Earth rotates on its own axis, producing the 24-hour day. Earth revolves about the Sun, producing the 365-day year.

The spinning of the Earth causes day to turn to night, while the full rotation/the revolution of the Earth causes summer to become winter. Combined, the spinning and the revolution of the Earth causes our daily weather and global climate by affecting wind direction, temperature, ocean currents and precipitation.

It gives day and night, an integral part within the evolution of life (and its behaviour) on the planet. The temperature shift helps drive weather, as does the spin of the earth itself. And seasons come and go as the spin tilts. The atmosphere is protected by magnetic fields created by the spin.

Some of the effects of the Earth’s rotation are as follows: Rotation creates a diurnal cycle of light and darkness, i.e. day and night. Rotation causes tides, i.e. rise and fall of the sea level twice a day. Rotation causes sunrise in the east and sunset in the west.

Rotation causes a deflection of ocean and air currents. The earth rotates much faster than the winds or currents move. This causes a large g deflection in the direction that winds move and ultimately results in rotation around low pressure cells and high pressure cells.

At the Equator, the earth’s rotational motion is at its fastest, about a thousand miles an hour. If that motion suddenly stopped, the momentum would send things flying eastward. Moving rocks and oceans would trigger earthquakes and tsunamis. The still-moving atmosphere would scour landscapes.

Thus, as the earth stops rotating, the value of acceleration of gravity at any point p will increase by an amount of Rω2cos2α everywhere except the poles. So, the correct answer is “Option C”. Additional Information: Hence, the acceleration due to gravity increases.

JEE Main & Advanced Physics Gravitation / गुरुत्वाकर्षण Variation in g Due to Rotation of Earth. As the earth rotates, a body placed on its surface moves along the circular path and hence experiences centrifugal force, due to it, the apparent weight of the body decreases.

Therefore, the value of ‘g’ increases if the earth stops rotating.

Answer. If the rotational speed of the earth is doubled, the value of /( g/) at equator will decrease since the centrifugal force will increase. There will be no change in /( g/) at poles because there is no effect of spinning on poles.

The Earth is currently rotating on its axis, completing one turn approximately every 24 hours. This rotational velocity causes the Earth to bulge out around its equator, turning our planet into an oblate spheroid (a flattened ball). Without this spin, gravity would be able to pull the Earth into a nice perfect sphere.

oblate spheroid

The Earth is divided into three heat zones: the Frigid Zone, the Temperate Zone and the Torrid Zone. The Torrid Zone is the closest to the equator and is the hottest of the three zones. The Temperate Zone is split into two zones on either size of the Torrid Zone, and has temperatures ranging from warm to cool.