Podcast
Questions and Answers
What is the relationship between angular velocity and tangential velocity?
What is the relationship between angular velocity and tangential velocity?
- They are perpendicular to each other.
- They are directly proportional. (correct)
- They are inversely proportional.
- They are always equal in magnitude.
Which vector points towards the center in circular motion?
Which vector points towards the center in circular motion?
- Tangential acceleration vector
- Tangential velocity vector
- Angular velocity vector
- Centripetal acceleration vector (correct)
In circular motion, what must be true for an object to stay in its curved trajectory?
In circular motion, what must be true for an object to stay in its curved trajectory?
- The tangential force must be greater than the centripetal force.
- The net force must be positive.
- The object must accelerate outward from the circle.
- The centripetal force must be balanced by the tangential force. (correct)
What is the relationship between angular acceleration and tangential acceleration?
What is the relationship between angular acceleration and tangential acceleration?
If two objects are spun in a circle at the same radius and angular velocity, which has a greater linear velocity upon release?
If two objects are spun in a circle at the same radius and angular velocity, which has a greater linear velocity upon release?
What happens to tangential acceleration when an object is constantly changing direction?
What happens to tangential acceleration when an object is constantly changing direction?
In a flat turn at high speed, what type of force balances the tangential force?
In a flat turn at high speed, what type of force balances the tangential force?
What is the unit of tangential acceleration?
What is the unit of tangential acceleration?
If an object experiences a net force of zero in a curve, what can be said about its trajectory?
If an object experiences a net force of zero in a curve, what can be said about its trajectory?
What is the relationship between tangential velocity and angular velocity?
What is the relationship between tangential velocity and angular velocity?
In circular motion, what is the direction of the tangential acceleration vector?
In circular motion, what is the direction of the tangential acceleration vector?
When considering forces in a curve, what is needed for an object to maintain its curved trajectory?
When considering forces in a curve, what is needed for an object to maintain its curved trajectory?
If a satellite orbits a planet once every 30 days, what can be inferred about its speed?
If a satellite orbits a planet once every 30 days, what can be inferred about its speed?
What does a tangential acceleration of zero indicate in circular motion?
What does a tangential acceleration of zero indicate in circular motion?
When a car enters a freeway ramp at 45 mph and accelerates to 65 mph, what can be said about its centripetal force?
When a car enters a freeway ramp at 45 mph and accelerates to 65 mph, what can be said about its centripetal force?
What is the effect of a tangential acceleration pointing opposite to the object's motion?
What is the effect of a tangential acceleration pointing opposite to the object's motion?
In circular motion, what balances the gravitational pull on an object to keep it in orbit?
In circular motion, what balances the gravitational pull on an object to keep it in orbit?
When an object has a net force of zero in a curve, what does this imply about its velocity?
When an object has a net force of zero in a curve, what does this imply about its velocity?
What happens when a snowboarder slows down during a turn?
What happens when a snowboarder slows down during a turn?
