Question

What is the gravitational potential energy of a 0.15 kg ball resting at the edge of a roof that is 40 m above the ground?​

Answer 1

In this example, a 3 kilogram mass, at a height of 5 meters, while acted on by Earth's gravity would have 147.15 Joules of potential energy, PE = 3kg * 9.81 m/s2 * 5m = 147.15 J.

Answer 2

ɢʀᴀᴠɪᴛᴀᴛɪᴏɴᴀʟ ᴇɴᴇʀɢʏ ᴏʀ ɢʀᴀᴠɪᴛᴀᴛɪᴏɴᴀʟ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ ɪꜱ ᴛʜᴇ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ ᴀ ᴍᴀꜱꜱɪᴠᴇ ᴏʙᴊᴇᴄᴛ ʜᴀꜱ ɪɴ ʀᴇʟᴀᴛɪᴏɴ ᴛᴏ ᴀɴᴏᴛʜᴇʀ ᴍᴀꜱꜱɪᴠᴇ ᴏʙᴊᴇᴄᴛ ᴅᴜᴇ ᴛᴏ ɢʀᴀᴠɪᴛʏ. ɪᴛ ɪꜱ ᴛʜᴇ ᴘᴏᴛᴇɴᴛɪᴀʟ ᴇɴᴇʀɢʏ ᴀꜱꜱᴏᴄɪᴀᴛᴇᴅ ᴡɪᴛʜ ᴛʜᴇ ɢʀᴀᴠɪᴛᴀᴛɪᴏɴᴀʟ ꜰɪᴇʟᴅ, ᴡʜɪᴄʜ ɪꜱ ʀᴇʟᴇᴀꜱᴇᴅ (ᴄᴏɴᴠᴇʀᴛᴇᴅ ɪɴᴛᴏ ᴋɪɴᴇᴛɪᴄ ᴇɴᴇʀɢʏ) ᴡʜᴇɴ ᴛʜᴇ ᴏʙᴊᴇᴄᴛꜱ ꜰᴀʟʟ ᴛᴏᴡᴀʀᴅꜱ ᴇᴀᴄʜ ᴏᴛʜᴇʀ.

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