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WorksheetsArchimedes principle
Total questions: 10
Worksheet time: 5mins
Which best describes the buoyant force?
The upward force of a fluid
The weight of the object
The volume of the fluid displaced
The downward force of a fluid
The total weight of the fluid
A block of wood weighs 160N and has a specific gravity of 0.60. To sink it in fresh water requires an additional downward force of:
54N
64N
96N
110N
A 0.50-N metal sinker appears (as measured using a spring scale) to have a weight of 0.45N when submerged in water. The specific gravity of the metal is:
6
8
9
10
12
An object weighing 5 N in air, weighs 4.5 N a liquid. The buoyant force experienced by the object is :
(5 + 4.5) N
4.5/5 N
5/4.5 N
0.5 N
The same body is immersed in two liquids A and B in succession. The extent to which the body sinks in liquid B is less then in liquid A. What are the conclusions that could be derived from such an observation
The density of liquid A is more then B
The density of liquid B is more then A
The density of solid is less then the liquid in both
No such conclusion can be made
The sea water is denser than fresh water due to
Mixing of sand
Stagnation
Mixing of salts
Evaporation
While measuring the volume displaced by a solid inside a liquid in a measuring jar, which of the following methods should be adopted?
As in fig. (III) the solid should be partially immersed in the liquid in the jar.
As in fig. I the solid should be well inside the liquid.
Just rest at the surface of liquid in jar as in fig. (IV)
As in fig.(II) the solid should be inside the liquid resting at bottom of the jar.
A packet of 400 g and volume 200 cm3 is put in a water tank. The relative density of packet is
2
4
200
400
An object of weight 500 N is floating in a liquid. The magnitude of buoyant force acting on it is
500
400
200
100
If relative density is 11.3, the density of the substance in SI units is
11.3 g/cm3
11.3 kg/m3
11.3 x 103 kg/m3
11.3 x 103 g/cm3
