You can see all of your stories from apps in your private activity log. To remove an app story from your Timeline and activity log: 1  Click in the top right of Facebook and select Activity Log.
upthrust. 1  a thrust in an upward direction. 2  a sudden and forceful upward movement, as of a nation's economy or the stock market: Market observers are hoping the upthrust can be sustained. 3  Geology. an upheaval. 4  to thrust upward: Frost caused the ground to upthrust.
He said that the water gives an upward force or upthrust on any object in it. You can weigh an object in air and then in water and actually work out the upthrust, it is the difference between the two readings. For this reason the upthrust is often called the loss in weight of the object.rchimedes principle says that when an object is immersed in a liquid the apparent loss of weight of an object is equal to the upthrust and this is also equal to the weight of the liquid displaced. You can prove this by the following experiments.