The attraction between the suns gravity and earths gravity holds earth in it's orbit
Answer:
The final angular velocity is
Explanation:
From the question we are told that
The mass of the first disk is m
The radius of the first disk is r
The mass of second disk is M
The radius of second disk is R
The speed of rotation is w
The moment of inertia of second disk is
Since the first disk is at rest initially
The initial angular momentum would be due to the second disk and this is mathematically represented as
Now when the first disk is then dropped the angular momentum of the whole system now becomes
This above is because the formula for moment of inertia is the same for every disk
According to the law conservation of angular momentum
=>
Some properties I know are
melting point<span>
, </span>
boiling point<span>
, and index of </span>
refraction<span>.</span>
Answer:
The reason is similar to the reason why it is difficult to roll an object on a surface with a positive incline than rolling it on the ground
The more the path becomes vertical, the more force we have to apply to oppose the force of gravity
but when we are moving horizontally, we don't have to move against the gravity and hence, it is less difficult than going vertically upwards