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spin [16.1K]
3 years ago
11

The spring to launch a pinball in a pinball machine is compressed 25 cm and has a spring constant of 140 N/m.

Physics
1 answer:
mote1985 [20]3 years ago
8 0

Answer:

I think it is 5.6. This is my answer

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7 0
2 years ago
Read 2 more answers
A rod has a radius of 10 mm is subjected to an axial load of 15 N such that the axial strain in the rod is ????௫ = 2.75*10-6, de
EleoNora [17]

Answer:

Knowing we only have one load applied in just one direction we have to use the Hooke's law for one dimension

ex = бx/E

бx = Fx/A = Fx/πr^{2}

Using both equation and solving for the modulus of elasticity E

E = бx/ex = Fx / πr^{2}ex

E = \frac{15}{pi (10 * 10^{-3})^{2} * 2.75 * 10^{-6}    } = 17.368 * 10^{9} Pa = 17.4 GPa

Apply the Hooke's law for either y or z direction (circle will change in every direction) we can find the change in radius

ey = \frac{1}{E} (бy - v (бx + бz)) = -\frac{v}{E}бx

= \frac{vFx}{Epir^{2} } = \frac{0.23 * 15}{pi (10 * 10^{-3)^{2} } * 17.362 * 10^{9}  } = -0.63 *10^{-6}

Finally

ey = Δr / r

Δr = ey * r = 10 * -0.63* 10^{-6} mm = -6.3 * 10^{-6} mm

Δd = 2Δr = -12.6 * 10^{-6} mm

Explanation:

5 0
4 years ago
If you plan to exercise every day what is something you can do to make it more convenient so that you exercise more regularly?
jolli1 [7]

Answer: exercise doing something you like. for example if you like dancing incorporate dancing in your workouts so you will be more likely to do it regularly

Explanation:

4 0
3 years ago
Why does a magnet get demagnetized when hammered?​
ale4655 [162]

Answer:

Answer is on the pic

Explanation:

I hope it's helpful!

4 0
3 years ago
A brick is released with no initial speed from the roof of a building and strikes the ground in 1.80 s , encountering no appreci
Mars2501 [29]
<span>Kinematics is used in this problem. The mass does not matter here because the question is mass independent. vi = 0 vf = x d = ? d = vi + 1/2 a t^2 d = 0 + 1/2 (9.8) (1.8)^2 d = 15.9 m (counting sig figs)</span>
8 0
4 years ago
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