GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the force that holds objects in orbit around the Sun?
A
static electricity
B
rotation
C
gravity
D
orbit
Explanation: 

Detailed explanation-1: -Gravity is the force by which a planet or other body draws objects toward its center. The force of gravity keeps all of the planets in orbit around the sun.

Detailed explanation-2: -The orbit can be expressed in terms of the acceleration of gravity at the orbit. The force of gravity in keeping an object in circular motion is an example of centripetal force. Since it acts always perpendicular to the motion, gravity does not do work on the orbiting object if it is in a circular orbit.

Detailed explanation-3: -When that happens we call it a centripetal force-a force that keeps objects moving in a circular path. That circular motion is the reason for the planets’ orbit around the Sun. Today you’re going to experiment with forces like those that set our solar system in motion.

Detailed explanation-4: -Its surface gravity is 274 m/s2 or 28.0 times that of the Earth. Its mean density is 1410 kg/m3 or 0.255 times the mean density of Earth. The Sun’s diameter of 1, 392, 000 km is 109 times the Earth’s equatorial diameter of 12, 756 km.

There is 1 question to complete.