Module 5 Flashcards
A student conducts an experiment to find the acceleration due to gravity. They conclude that the acceleration is 9.74m/s^2. What is their %accuracy (g=9.81m/s^2)
0.71% (2dp)
What is the purpose of a low-Earth orbit?
Military and Earth observations.
What is the definition of escape velocity?
Escape velocity is the minimum velocity needed for a satellite to escape its orbit.
What are the forces acting on the car while turning a horizontal corner?
Weight Force
The Normal Force
Centripetal Force
What does ‘G’ represent in the formula
G = universal gravitational constant
What is the unit for torque?
Newton Metre (Nm)
What unit is distance measured in in Newtown’s Law of Universal Gravitation
(m) metres
Fill in the blank: The magnitude of the attractive force between two objects is proportional to the product of their masses, and _________ __________ to the square of the distance between them.
inversely proportional
What angle should the force be from the lever arm to provide maximum torque
90 deg or perpendicular
What is the formula for the strengh of a Gravitational Field
F = GMm/r^2
What is the formula for total potential energy of a planet/satellite in orbit?
U = -𝑮𝑴𝒎/𝒓
What unit is gravitational potential energy measured in?
Joules
What energies give the total energy for a satellite in orbit?
Gravitational potential energy (U) and Kinetic energy (K)