To establish equilibrium all torques need to be justified , the body needs to be in translational as well as rotational equilibrium.
<h3>What is equilibrium and why balancing the torques is not enough to establish equilibrium?</h3>
- Equilibrium is a condition of balance between forces, or influences from opposite ways .
- For a body to attain equilibrium , need to have both translational as well as rotational equilibrium.
- Force is responsible for translational equilibrium and torque is responsible for rotational equilibrium.
- Considering a rod , and applying equal forces at the ends of the rods in upward direction, and seeing the net torque to be zero.
- Hence the body needs to be in both translational and rotational equilibrium to attain equilibrium.
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Answer:
2400 cm
Explanation:
The milky way has diameter of 100000 light years.

The local group is the collection of galaxies which includes the milky way.
10 million light years is the diameter of the local group.

Hence, the diameter of the scale model of the local group would be 2400 cm
Answer:
a) 2232nm
b) 2511nm
Explanation:
a) To find the path difference Δl you use the following formula:

m: order of a bright fringe
λ: wavelength of light = 558nm
for m=4:

b) The path difference for the case of destructive interference you have:

m: order of a dark fringe
for m=4:
