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alexandr1967 [171]

4 years ago

9

A 9.0-cm-long spring is attached to the ceiling. when a 1.8 kg mass is hung from it, the spring stretches to a length of 18 cm .

you may want to review ( pages 219 - 221) . part a what is the spring constant k?

1 answer:

Alex Ar [27]4 years ago

5 0

The spring constant is computed by:
F = kx

Where: F is the force applied in newtons (N)

k is the spring constant measured in newtons per meter (N/m); and

x is the distance the spring is stretched (m)
and

F = mg

Where: F is the force pulling objects in the direction of the Earth.

m is the mass of the object.

g is the acceleration due to gravity;
So plugging our values in the formula:

F = mg

= (1.8) (9.81) = 17.658N

k =

F/x = 17.658 /0.09 = 196.2 N/meter

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Fnet = Fg sin 30 - Ff
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4 years ago

A bicycle wheel with radius 0.3 m rotates from rest to 3 rev/s in 5 s. What is the magnitude and direction of the total accelera

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Answer:

Explanation:

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where $\alpha =angular\ acceleration$

$\omega =Final\ angular\ velocity$

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$\alpha =\frac{18.85}{5}=3.77 rad/s^2$

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zlopas [31]

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3 years ago

A glider is initially moving at a constant height of 3.72 m. It is suddenly subject to a wind such that its velocity at a later

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The initial velocity of the glider was $17.89\ \text{m/s}$ .

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3 years ago