A Spring with A $3 - \mathrm { kg }$ Mass Is Held Stretched

question 46

Multiple Choice

A spring with a $3 - \mathrm { kg }$ mass is held stretched $0.9 \mathrm {~m}$ beyond its natural length by a force of $30 \mathrm {~N}$ . If the spring begins at its equilibrium position but a push gives it an initial velocity of $1 \mathrm {~m} / \mathrm { s }$ , find the position $x ( t )$ of the mass after $t$ seconds.

• A) \(x ( t ) = 1 \sin ( 7 t )\)
• B) \(x ( t ) = 0.3 \sin \left( \frac { 10 } { 3 } t \right) + 0.4 \cos \left( \frac { 10 } { 3 } t \right)\)
• C)\(x ( t ) = 0.3 \sin \left( \frac { 10 } { 3 } t \right)\)
• D)\(x ( t ) = 0.4 \cos \left( \frac { 10 } { 3 } t \right)\)
• E) \(x ( t ) = \frac { 10 } { 3 } \sin ( 7 t )\)

Understand the concept of multirange meters and their application.

Grasp the significance of meter impedance in the accuracy of measurements.

Understand the role and application of shunts in meter measurements.

Understand the concept of insulation and its importance in electrical wiring.

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