Formulas
A formula that calculates the centripetal force using centripetal acceleration and mass.
What is Fc = mac ?
The movement of an object along a circular path at a constant speed.
What is circular motion?
If a string is cut from a ball that is moving in a circular path. The ball continues on in a linear path due to what concept?
What is INERTIA ?
The ball is spinning on a string with a radius of 2.0 m and a tangential velocity of 3.5 m/s . Calculate the centripetal acceleration.
What is 6.125 m/s/s ?
The radius is doubled, what happens to the velocity?
Velocity is doubled. (2v)
Formula used to calculate centripetal acceleration.
What is a = v2/r ?
Linear velocity of an object if the centripetal force is gone and circular motion stops. Makes a 90o angle with centripetal force/acceleration.
What is tangential velocity?
A direct proportional squared relationship.
What is velocity and force?
The radius of a circular path is 0.5 m and it takes .75 s for the marble to travel one revolution around the circular path. Calculate the tangential velocity.
What is 4.19 m/s ?
The mass is decreased by a factor of two. What happens to the force?
The force is halved. (1/2 F)
Formula used to find the period (T). Hint: The time it takes for one revolution.
What is T = total time/# of revolutions ? T = period
A force that causes an object to move in a circular path. Directed towards the center. Makes a 0o angle with centripetal acceleration.
What is centripetal force?
The velocity is _______ to the circular path.
What is tangent?
A 2.0 kg ball is spinning on a string with a radius of 2.0 m and a tangential velocity of 3.5 m/s . Calculate the centripetal force.
What is 12.25 N ?
The velocity is halved. What happens to the force?
The force is decreased by a factor of 4. (1/4 F)
Formula used to calculate tangential velocity.
What is v = (2*pi*r)/T ?
The rate of change of tangential velocity. Makes a 0o angle with centripetal force.
What is centripetal acceleration?
The units used to measure the radius.
What is meters?
The radius of a circular path is 0.5 m and it takes .75 s for a 0.2 kg marble to travel one revolution around the circular path. Calculate the centripetal acceleration.
Hint: find the tangential velocity
What is 35.1 m/s/s ?
The velocity is doubled, what happens to the centripetal force?
Force is increased by a factor of 4. (4F)
Formula used to calculate centripetal force.
What is F = (mv2)/r ?
Curved velocity of an object as it is moving in a circular path.
What is angular velocity?
The units for acceleration.
What is m/s2 or m/s/s ?
The radius of a circular path is 0.5 m and it takes .75 s for a 0.2 kg marble to travel one revolution around the circular path. Calculate the centripetal force.
What is 7.02 N ?
The radius is decreased by a factor of 2. What happens to velocity?
Velocity is decreased by a factor of 2. (1/2 v)