All Flashcards
What is the effect of the net force pointing towards the center of the circle?
The object moves in a circular path.
What happens if you forget to include all relevant forces in your FBD?
Incorrect analysis of the motion and incorrect calculations of net force.
What is the effect of doubling the speed of an object in circular motion?
The centripetal force required quadruples.
What happens when the normal force is greater than weight at the bottom of a loop?
You feel heavier.
What happens if the speed of the block is doubled in the Free Response Question?
The new tension in the string will be 144 N.
What is a Free Body Diagram (FBD)?
A visual tool showing all forces acting on an object.
What is centripetal force?
The net force that points towards the center of the circle, causing an object to move in a circular path.
Define normal force.
The force exerted by a surface on an object in contact with it, usually perpendicular to the surface.
What is apparent weight?
How heavy you 'feel', which is related to the normal force acting on you.
Define weight force.
The force of gravity acting on an object, always pointing downwards towards the Earth.
What are the steps to draw an FBD?
- Represent the object as a dot. 2. Draw arrows outward from the dot to represent forces. 3. Label each force with its appropriate symbol.
How do you analyze forces in uniform circular motion using an FBD?
- Draw the FBD. 2. Choose a coordinate system with one axis pointing towards the center of the circle. 3. Apply Newton's Second Law, , where is the net force towards the center (centripetal force).