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Irina18 [472]
3 years ago
9

A spring with a spring constant of 100 N/m is relaxed at the beginning. The spring is then compressed by 0.1 m. An object of 0.0

1 kg is attached to the compressed spring. If the compressed spring is released, the object will experience simple harmonic motion. What is the maximum possible speed of the object during the oscillation
Physics
1 answer:
tangare [24]3 years ago
6 0

Answer:

Velocity, v = 10 m/s

Explanation:

Spring constant of the spring, k = 100 N/m

Compression in the string, x = 0.1 m

Mass of the spring, m = 0.01 kg

Let v is the maximum possible speed of the object during the oscillation. It can be calculated by equating potential energy stored in the spring and the kinetic energy imparted to the object as :

\dfrac{1}{2}kx^2=\dfrac{1}{2}mv^2

v=\sqrt{\dfrac{kx^2}{m}}

v=\sqrt{\dfrac{100\times (0.1)^2}{0.01}}

v = 10 m/s

So, the maximum possible speed of the object during the oscillation is 10 m/s. Hence, this is the required solution.

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Given Information:

Length of wire = 132 cm = 1.32 m

Magnetic field = B =  1 T

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Required Information:

(a) Torque = τ = ?

(b) Number of turns = N = ?

Answer:

(a) Torque = 0.305 N.m

(b) Number of turns = 1

Explanation:

(a) The current carrying circular loop of wire will experience a torque given by

τ = NIABsin(θ)   eq. 1

Where N is the number of turns, I is the current in circular loop, A is the area of circular loop, B is the magnetic field and θ is angle between B and circular loop.

We know that area of circular loop is given by

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A = π(L/2πN)²

A = πL²/4π²N²

A = L²/4πN²

Substitute A into eq. 1

τ = NI(L²/4πN²)Bsin(θ)

τ = IL²Bsin(θ)/4πN

The maximum toque occurs when θ is 90°

τ = IL²Bsin(90)/4πN

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N = 2.2*1.32²*1)/4π*0.305

N = 1 turn

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