Question

Why the S.H.M acceleration is zero when the velocity is greatest?

Answer 1

Answer:

ᴛʜᴇ sᴘʀɪɴɢ ᴇxᴇʀᴛs ᴀ ғᴏʀᴄᴇ ᴏɴ ᴛʜᴇ ᴍᴀss ᴘᴜsʜɪɴɢ ɪᴛ ᴛᴏᴡᴀʀᴅ ᴛʜᴇ ᴇǫᴜɪʟɪʙʀɪᴜᴍ ᴘᴏsɪᴛɪᴏɴ. ᴡʜᴇɴ ᴛʜᴇ ᴍᴀss ɪs ᴀᴛ ᴛʜᴇ ᴍᴀxɪᴍᴜᴍ ᴅɪsᴘʟᴀᴄᴇᴍᴇɴᴛ ᴘᴏsɪᴛɪᴏɴ, ᴠᴇʟᴏᴄɪᴛʏ ɪs ᴢᴇʀᴏ ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ᴍᴀss ɪs ᴄʜᴀɴɢɪɴɢ ᴅɪʀᴇᴄᴛɪᴏɴ. ... ᴛʜᴇ ᴀᴄᴄᴇʟᴇʀᴀᴛɪᴏɴ, ᴛʜᴇʀᴇғᴏʀᴇ, ɪs ᴢᴇʀᴏ, ʙᴜᴛ ᴛʜᴇ ᴍᴀss ɪs ᴍᴏᴠɪɴɢ ᴀᴛ ɪᴛs ʜɪɢʜᴇsᴛ ᴠᴇʟᴏᴄɪᴛʏ.

Answer 2

Answer:

The spring exerts a force on the mass pushing it toward the equilibrium position. When the mass is at the maximum displacement position, velocity is zero because the mass is changing direction. ... The acceleration, therefore, is zero, but the mass is moving at its highest velocity.