Version 052/AADBA – Test #2 – Antoniewicz – (56445)
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Two identical springs are in parallel. Each
spring has one oF its ends attached to the
ceiling and its other end attached to a weight.
The mass oF the springs is negligible. Consider
the situation in which the weight has a mass
M and the system is stretched by a length b.
Choose correct statements below
Ia. The sti±ness oF one spring is
Ib. The sti±ness oF one spring is
IIa. The amount oF stretch in one spring is
IIb. The amount oF stretch in one spring is
IIIa. The amount oF Force along one spring
IIIb. The amount oF Force along one spring
is M g.
Ia, IIb, IIIb
Ib, IIa, IIIb
Ia, IIa, IIIa
Ia, IIb, IIIa
Ib, IIb, IIIb
Ia, IIa, IIIb
Ib, IIb, IIIa
Ib, IIa, IIIa
The sti±ness oF the 2-spring system For the
present setup is by defnition
the parallel setup, the Force is equally shared
between the two identical springs, i.e. each
spring experiences a Force oF
the total stretch is given to be b, with the
parallel arrangement, each spring stretches
by the same amount.
The sti±ness oF one
A piece oF iron is Fastened on top oF a block oF
wood ²oating in water.
IF the block is inverted so the iron is below
the block oF wood, would the wood ²oat at
the same level, lower, or higher?
Higher, because there is a buoyant Force
acting on the iron now.
It would ²oat lower, because the iron
displaces water and the overall water level
It depends on the ratio oF iron and wood
It would ²oat at the same level.
The iron-wood unit displaces its combined