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Sav [38]
3 years ago
12

Identify the relationship between kinetic energy (KE) and gravitational potential energy (PE) for the cyclist at each position.

KE increases while PE decreases. PE is at a minimum. KE decreases while PE increases. PE is at a maximum.
Physics
1 answer:
yanalaym [24]3 years ago
8 0

Answer:

\frac{7}{1} 4 \times \frac{3}{9}   \sqrt{69}   \sqrt[4]{20}

Explanation:

kinetic energy

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A spring with spring constant k is suspended vertically from a support and a mass m is attached. The mass is held at the point w
garik1379 [7]

Answer:

The oscillation frequency of the spring is 1.66 Hz.

Explanation:

Let m is the mass of the object that is suspended vertically from a support. The potential energy stored in the spring is given by :

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

k is the spring constant

x is the distance to the lowest point form the initial position.

When the object reaches the highest point, the stored potential energy stored in the spring gets converted to the potential energy.

E_P=mgx

Equating these two energies,

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

\dfrac{k}{m}=\dfrac{2g}{x}.............(1)

The expression for the oscillation frequency is given by :

f=\dfrac{1}{2\pi}\sqrt{\dfrac{k}{m}}

f=\dfrac{1}{2\pi}\sqrt{\dfrac{2g}{x}} (from equation (1))

f=\dfrac{1}{2\pi}\sqrt{\dfrac{2\times 9.8}{0.18}}

f = 1.66 Hz

So, the oscillation frequency of the spring is 1.66 Hz. Hence, this is the required solution.

8 0
4 years ago
Physical system
ch4aika [34]

Answer:

this happens because there is gravitational force acting upon it.

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