Answer:
The resulting angular speed of the platform is 7.44 rev/s.
Explanation:
Given that,
Speed = 2.4 rev/s
Moment of inertia consist of the man = 6.2 kg-m²
Moment of inertia by the bricks= 2.0 kg-m²
We need to calculate the resulting angular speed of the platform
Using law of conservation of momentum
Where,
= moment of inertia consist of the man
= moment of inertia by the bricks
= angular speed of platform
Put the value into the formula
Hence, The resulting angular speed of the platform is 7.44 rev/s.
The transit method requires watching the light output of a star over long periods of time. A transit occurs when the planet crosses in front of its star from earths point of view. Since there is a small object (the planet) now blocking some of the star, it appears to dim a little bit for a while until the planet passes. If we are in a position where that occurs regularly (most paths of planets do not happen to be on the line of sight between earth and their star) we can deduce the period of orbit. From the amount of dimming and the period you can estimate the mass
Answer:
Explanation:
the net force on the right left is 25 N and is directed upward
the net force on the left one is zero because 200N force act upward and 200N force act downward so both cancel each other and net force is zero
i hope this will help you
