The weight of liquid displaced is equal to the upthrust. Find the weight of displaced water by subtracting the reading of step (2) from step (6).Weigh the beaker containing displaced water which is collected from the overflow can while immersing the bob in it completely.This will give you the weight of the brass bob in tap water. Note down the new position of pointer of the spring balance.Now, allow the bob to immerse completely in water in overflow’ can.Set the spring balance, overflow can with tap water and beaker as shown in Fig 3.2.Weigh the empty beakers using spring balance.Measure the weight of a solid, say a metallic ball in air by using spring balance as shown in Fig 3.1 and as per procedure explained in Experiment 2 of Term II.(A) Measurement for the apparent loss in weight of brass bob: Loss in weight = Weight of body in air – Weight of body immersed in water The loss in weight of a body is due to the presence of upthrust which is equal to the weight of liquid displaced. The loss in weight is equal to the weight of liquid displaced by the body. You can also Download Class 9 Science Notes PDF to help you to revise complete Syllabus and score more marks in your examinations.Īccording to Archimedes’ principle, when a body is immersed in a liquid, completely or partially, it loses its weight. strongly salty water, with the weight of water displaced by it by taking at least two different solids.Ī spring balance, a clamp stand, two different solids, such as metallic brass bob and rectangular block, overflow can, tap water, strongly salty water, a strong thread and two empty beakers.
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