Question
click below
click below
Question
Normal Size Small Size show me how
UCM and UG Physics
UCM- Uniform Circular Motion & UG - Universal Gravitation
Question | Answer |
---|---|
Centripetal forces are always ____ to the circle | perpendicular |
If the centripetal force disappears, an object will move... | in a straight line at a constant speed |
the force needed to cause rotation | centripetal |
Circular motion is accelerated because this is changing | direction |
Objects travelling in a circle are accelerating towards the | center |
Gravitational force depends on two | masses |
Gravitational force is inversely related to the square of the ___ between the two objects. | distance |
Graviational force and mass are ____ related | directly |
Gravity that occurs everywhere | universal |
Speed perpendicular to a circle | tangential velocity |
The speed of a UCM object moving in a circle is | constant |
This vector points in the same direction as the centripetal force | centripetal acceleration |
Always an attractive action reaction pair of forces | gravitational force |
If you increase the distance between two objects, the gravitational force between them will | decrease |
If you cut the distance between two objects in half, the gravitational force will | quadruple |
If you double one mass, the gravitational force it exerts on everything else will | double |
a change in this is acceleration | velocity |
three ways to accelerate | speed up, slow down, change direction |
the other name for gravitational force | weight |
Unit for weight and gravitational force | Newton |
The centripetal force when a car rounds a curve | friction |
The centripetal force when a waterskiier changes direction | tension |
tendency of an object to keep the same motion | inertia |
equation to calculate mass from weight | Fw = mg |
The time it takes to make one revolution (T) | period |
Universal gravitation constant, G | 6.67 x 10^-11 |
acceleration due to gravity on earth, g | -9.8 m/s^2 |