Question

explain the value of g is zero at the centre of the earth? ​

Answer 1

Answer:

ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ᴛʜᴇ ᴇᴀʀᴛʜ's ɢʀᴀᴠɪᴛʏ ɪs ᴢᴇʀᴏ ᴀᴛ ᴛʜᴇ ᴄᴇɴᴛʀᴇ ᴏғ ᴛʜᴇ ᴇᴀʀᴛʜ ʙᴇᴄᴀᴜsᴇ ᴀᴛ ᴛʜᴀᴛ ᴘᴏɪɴᴛ ᴛʜᴇ ᴍᴀss ᴏғ ᴛʜᴇ ᴇᴀʀᴛʜ ɪs ᴇǫᴜᴀʟʟʏ ᴅɪsᴛʀɪʙᴜᴛᴇᴅ ɪɴ ᴀʟʟ ᴅɪʀᴇᴄᴛɪᴏɴs, sᴏ ᴘᴜʟʟɪɴɢ ᴇǫᴜᴀʟʟʏ ɪɴ ᴀʟʟ ᴅɪʀᴇᴄᴛɪᴏɴs ғᴏʀ ᴀ ɴᴇᴛ ᴢᴇʀᴏ ᴘᴜʟʟ. ᴀs ᴛʜᴇ ᴅɪsᴛᴀɴᴄᴇ ғʀᴏᴍ ᴛʜᴇ ᴄᴇɴᴛʀᴇ ᴅᴇᴄʀᴇᴀsᴇs, ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ ᴀʟsᴏ ᴅᴇᴄʀᴇᴀsᴇs.

Answer 2

Answer:

At the centre of Earth, the force due to upper half of the Earth will cancel the force due to lower half. ... Therefore, when F=0, then g has to be 0. Thus, the value of g is zero at the centre of Earth.

9.8 m/s^2

where d represents the distance from the center of the object to the center of the earth. In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s^2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s^2.