Rotational Motion and Astro Physics Flashcards
The First Differential of Displacement is ……….?
Velocity
Acceleration is the first differential of velocity which means …..?
Acceleration is the 2nd differential of displacement.
Acceleration’s first integral is what?
Velocity
Displacement is the 2nd integral of acceleration which makes it
The first integral of velocity.
The gradient of a curve on a motion-time graph represents what?
Instantaneous rate of change, and can be found by differentiation
The gradient of a curve on a displacement-time graph is what?
The Instantaneous Velocity
the gradient of a curve on a velocity-time graph is what?
The Instantaneous Acceleration
The area under a line graph can be found by what?
Integration
Area under an acceleration-time graph is what?
Change in Velocity
area under a velocity-time graph is what?
The displacement
What must you use when dealing with angular motion?
Radians
How do you convert between degrees and radians
Angle in Radians x 180 degrees/ Pi = Angle in degrees
What force is necessary for an object to maintain circular motion?
Centripetal ( Radial or Central) Force
Centripetal force results in what?
Centripetal (Radial or central) acceleration of the object
an unbalanced torque causes a change in what?
the angular (rotational) motion of an object.
what is the Moment of Inertia?
The moment of Inertia of an object is a measure of that object’s resistance to Angular Acceleration about a given axis.
What is the principle of conservation of Angular Momentum?
The Total Angular Momentum before a collision will equal the total Angular Momentum after a collision, as long as no external torques act upon the system.
How do you convert between Astronomical Units (AU) and metres?
Multiply the number of astronomical Units by the Value given on the data sheet for 1 AU (in metres)
What is gravitational field strength?
gravitational force acting on a unit mass
what is the gravitational potential of a point in space
The work done in moving unit mass from Infinity to that point
the energy required to move mass between two points in a gravitational field is independent of what?
the path taken
What is escape velocity?
The minimum velocity required to allow a mass to Escape a gravitational field to Infinity.
Special relativity deals with motion in what frame of reference?
Inertial or non-accelerating frames of reference.
General Relativity deals with motion in what frame of reference?
non-inertial or accelerating frames of reference.