8 The 23 g mass ball from (a) and the spring from (b) are now used in an experiment to investigate upthrust The ball attached to the spring is lowered into a beaker containing a liquid so that it is totally submerged. The student measures the new length $L_n$ of the spring as shown in Fig. 3.3 spring ball liquid Fig. 3.3 The length $L_n$ of the spring is now 0.088 m. (i) Calculate the upthrust on the submerged ball. upthrust = ______ N [2] (ii) Calculate the density of the liquid density of liquid = ______ kg m$^{-3}$ [2]
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First, we need to understand what upthrust is. Upthrust, also known as buoyant force, is the force exerted by a fluid on an object submerged in it. It is equal to the weight of the fluid displaced by the object. Show more…
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