So, the weight is supported by the tension in the two wires, but only part of the tension goes in holding the body: the vertical component.
If the angle between the ceiling and the wire is 40 deg, then the vertical component is
T_y = T * sin(40),
There are two wires, so together they do
2*T*sin(40)
And all this holds the weight of the body, so:
2*T*sin(40)=150 ----> T = 75/sin(40)~116.68 N,
Notice how it is larger than 150N (both wires is ~ 233 N), as the angle becomes smaller, there is less tension that is vertical, so one needs more tension to make the vertical component as large as (half) the weight of the body
Hope it helps!
As we know that collision is elastic so we will have
![e = 1 = \frac{v_2 - v_1}{2 - 0}](https://tex.z-dn.net/?f=e%20%3D%201%20%3D%20%5Cfrac%7Bv_2%20-%20v_1%7D%7B2%20-%200%7D)
![v_2 - v_1 = 2 m/s](https://tex.z-dn.net/?f=v_2%20-%20v_1%20%3D%202%20m%2Fs)
also we can use momentum conservation
![P_{1i} + P_{2i} = P_{1f} + P_{2f}](https://tex.z-dn.net/?f=P_%7B1i%7D%20%2B%20P_%7B2i%7D%20%3D%20P_%7B1f%7D%20%2B%20P_%7B2f%7D)
![0.200(2m/s) + 0 = 0.200 v_1 + 1v_2](https://tex.z-dn.net/?f=0.200%282m%2Fs%29%20%2B%200%20%3D%200.200%20v_1%20%2B%201v_2)
![0.4 = 0.2v_1 + v_2](https://tex.z-dn.net/?f=0.4%20%3D%200.2v_1%20%2B%20v_2)
now from above two equations we will have
![1.2 v_1 = -1.6](https://tex.z-dn.net/?f=1.2%20v_1%20%3D%20-1.6)
![v_1 = -1.33 m/s](https://tex.z-dn.net/?f=v_1%20%3D%20-1.33%20m%2Fs)
also we have
![v_2 = 0.66 m/s](https://tex.z-dn.net/?f=v_2%20%3D%200.66%20m%2Fs)
so both balls will separate after collision and move in opposite direction as the final velocities are opposite in sign
So correct answer will be
<em>D. The balls separate and move in opposite directions.</em>
Answer: b.)Basic.
Explanation: Human Blood has a pH range of 7.35 to 7.45. this is an average but it is found to be more on the basic side for most healthy adults :)
Example: Increasing the tension in A string causes the speed of waves on the string to increase. Since the wavelengths of the standing waves remains constant, this results in a larger frequency of oscillations in the string, which we percieve as a higher pitch when the string vibrates the air.