A light spring of force constant k = 160 N/m rests vertically on the bottom of a large beaker of water (see figure (a)). A 5.00-kg block of wood (density = 650 kg/m3) is connected to the spring, and the block–spring system is allowed to come to static equilibrium (see figure (b)). What is the elongation ΔL of the spring? Include a free-body diagram for the block. (Hint: Begin your derivation with equilibrium: “ΣF = 0”. The derivation is a little complex, so don’t give up, and don’t be tempted to calculate the numerical answer in pieces.)
A light spring of force constant k = 160 N/m rests vertically on the bottom of a large beaker of water (see figure (a)). A 5.00-kg block of wood (density = 650 kg/m3) is connected to the spring, and the block–spring system is allowed to come to static equilibrium (see figure (b)). What is the elongation ΔL of the spring? Include a free-body diagram for the block. (Hint: Begin your derivation with equilibrium: “ΣF = 0”. The derivation is a little complex, so don’t give up, and don’t be tempted to calculate the numerical answer in pieces.)
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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A light spring of force constant k = 160 N/m rests vertically on the bottom of a
large beaker of water (see figure (a)).
A 5.00-kg block of wood (density = 650 kg/m3) is connected to the spring, and the block–spring system is allowed to come to static equilibrium (see figure (b)).
What is the elongation ΔL of the spring?
Include a free-body diagram for the block.
(Hint: Begin your derivation with equilibrium: “ΣF = 0”. The derivation is a little complex, so don’t give up, and don’t be tempted to calculate the numerical answer in pieces.)

Transcribed Image Text:The image illustrates two scenarios involving a spring submerged in a liquid.
**Diagram (a):**
- A spring with spring constant \( k \) is vertically submerged in a liquid within a container.
- The spring is in its relaxed, unstretched state with no additional mass attached.
- The parameter \( \Delta L \) is indicated, potentially representing a change in length when a force or mass is applied.
**Diagram (b):**
- The same spring \( k \) is shown, but now a mass \( m \) is attached to its top end.
- The spring is stretched due to the weight of the mass \( m \), resulting in an extension denoted by \( \Delta L \).
In both diagrams, the spring is entirely submerged in the liquid. The setup likely aims to illustrate concepts such as Hooke's Law, buoyancy, or the combined effect of forces in a fluid. The extension \( \Delta L \) in diagram (b) compared to diagram (a) allows for exploration of how different forces (gravity, buoyancy) affect the spring-mass system.
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