Boston University
Boston University: Inclined Plane
In this problem, a box is released from rest at the top of a 30-degree ramp. The box slides down the ramp, dropping a vertical distance of 1.5 m to the floor. How long does it take to reach the floor? Neglect friction. Includes...
Boston University
Boston University: The Gravitational Field
Defines what a gravitational field is, its value, and how to calculate it. Field-line patterns are also drawn and explained.