About: http://webisa.webdatacommons.org/206905293

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	During operation of the feedback loop where external acceleration or force on the mass is zero (that is, except gravity force), the forces on the mass should balance, that is,
http://www.w3.org/ns/prov#wasQuotedFrom	google.com