ASTR 1000 Lecture Notes - Lecture 10: Flattening, Gravitational Potential, Conservation Of Mass

22 views6 pages

byzantiumcrab634

19 Oct 2016

School

CU-Boulder

Department

Astrophysical & Planetary Sciences

Course

ASTR 1000

Professor

Benjamin Brown

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

There is no net gain or loss of a quantity of the system. A system is a group of interacting objects. Help us understand almost every process in the universe. Mass conservation: the total mass in a system is conserved despite physical changes. Conservation of momentum: when objects interact, the amount of momentum gained by an object must equal the amount lost by other objects ( m x v ) Conservation of angular momentum: when objects interact, the amount of angular momentum gained by an object must equal the amount lost by other objects ( m x v x dist. from center : rotational angular momentum: To change speed: change distance / velocity: orbital angular momentum: m x v x distance conserved for an orbiting object. Doubling the mass of an orbiting object doubles all of the following: Unit of joules (kg m^2 / s^2) aka force x distance.

Related Questions

Object A collides on a horizontal frictionless surface with an initially stationary target, object X. The initial and final velocities of object A are shown. The final velocity of object X is not given.

a). At an instant during the collision, is the net force on object A zero or non-zero?

b) [During the collision, is the momentum of object A conserved? Explain. Is the momentum of the system consisting of objects A and X conserved? Explain. On the same horizontal surface, object C collides with an initially stationary target, object Z. The initial speeds of objects C and A are the same, and m_x = m_z > m_A = m_c. After the collisions, object C moves in the direction shown and has the same final speed as object A. In the space below, copy the vectors v_C1 and v_cr with their tails together. Use these vectors to draw the change in velocity vector for glider C, Delta v_c. Is the magnitude of the change in velocity vector of object A greater than, less than, or equal to the magnitude of the change in velocity vector of object C? Explain? Is the magnitude of the change in the momentum vector of object A greater than, less than, or equal to the magnitude of the change in the momentum vector of object C? Explain? Is the final speed of object X greater than, less than, or equal to the final speed of object Z? Explain. Consider the following incorrect statement: Gliders A and C have some change in momentum. They have the same mass, and because they have the same initial speed and same final speed. Delta-v is the same for each of.them." Discuss the error(s) in the reasoning.

sangriaporcupine175

ASTR 1000 Lecture Notes - Lecture 10: Flattening, Gravitational Potential, Conservation Of Mass

Document Summary

Get access

Related Documents

Astronomy 1021 Lecture Notes - Lecture 6: Angular Momentum, Bohr Model, Thuban

Astronomy 1021 Lecture Notes - Lecture 11: Kinetic Energy, Tidal Locking, Tidal Acceleration

AST201H1 Chapter 4: astro chap 4 book notes

Related Questions