Answer:
Mass of the second block is 1.4 kg
Explanation:
When a weight (mg) is displaced from its equilibrium position in a spring mass system, a restoring force (kx) will act on the weight.
so, mg = -kx
where, k is a constant
Mass of block (
) = 0.70 kg
For one spring mass system,
![m_1g=-kx_1](https://tex.z-dn.net/?f=m_1g%3D-kx_1)
For the two spring mass system,
![m_2g+m_2g=-kx_2](https://tex.z-dn.net/?f=m_2g%2Bm_2g%3D-kx_2)
divide equation 2 by 1
![\frac{m_1g+m_2g}{m_1g} =\frac{-Kx_2}{-kx_1}](https://tex.z-dn.net/?f=%5Cfrac%7Bm_1g%2Bm_2g%7D%7Bm_1g%7D%20%3D%5Cfrac%7B-Kx_2%7D%7B-kx_1%7D)
![1+\frac{m_2}{m_1} =\frac{x_2}{x_1}](https://tex.z-dn.net/?f=1%2B%5Cfrac%7Bm_2%7D%7Bm_1%7D%20%3D%5Cfrac%7Bx_2%7D%7Bx_1%7D)
on further rearranging,
![m_2=m_1(\frac{x_2}{x_1} -1)\\=(0.70\ kg)\times (3.0 - 1)\\=1.4\ kg](https://tex.z-dn.net/?f=m_2%3Dm_1%28%5Cfrac%7Bx_2%7D%7Bx_1%7D%20-1%29%5C%5C%3D%280.70%5C%20kg%29%5Ctimes%20%283.0%20-%201%29%5C%5C%3D1.4%5C%20kg)
So, mass of the second block is 1.4 kg.
Answer:
F = 5
Explanation:
F = m x v^2/r = 2 x 10^2/5 =200/5 = 40 (N)
Answer:
The greater the luminosity of a star, the longer its period of oscillation.
The answer is <span>D.conservation of matter</span>