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allochka39001 [22]
3 years ago
15

A uniform pole AB of weight 5w and length 8a is suspended horizontally by tho strings attached to it at C and D where AC=DB=a. A

body of weight 9w hangs vertically from the pole at E where ED
=2a.
Calculate the tension in each string.

Physics
1 answer:
luda_lava [24]3 years ago
4 0
Moment about D=0 or,T1*6a-5w*3a-9w*2a=0 T2+T1=5w+9w

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A 1200-kg ore cart is rolling at 10.8 m/s across a flat friction-free surface. a crane suddenly drops of ore vertically into the
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The value of the final speed depends on the mass of the ore.

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p=Mv=(1200 kg)(10.8 m/s)=12960 kg m/s
After the ore is loaded, the new mass will be (1200 kg+m), and the new speed is v_f. The momentum p is conserved, so it is still 12960 kg m/s. Therefore, we have
p=12960 kg m/s =(1200 kg+m)v_f
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Plasma is the most abundant state of matter in the universe and has the most kinetic energy. It can be found in all the planets of our solar system, the sun, and other stars

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We have three identical metallic spheres A, B, C. Initially sphere A is charged with charge Q, while B and C are neutral. First,
larisa [96]

Answer:

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Explanation:

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Let's start Sphere A makes contact with sphere B, whereby each one ends with half of the initial charge, at this point

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                q_B = Q / 2

Now sphere A touches sphere C, ending with half the charge

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Now the sphere A that has Q / 4 of the initial charge is put in contact with the sphere B that has Q / 2 of the initial charge, the total charge is the sum of the charge

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The final charges of each sphere are:

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