Centripetal Force
Basics
Basics
Centripetal force is the net force causing the centripetal ________ of an object in circular motion.
What is acceleration?
A car is moving around a circular track at a constant speed. Explain if it is accelerating.
What is yes, accelerating because changing direction?
What is the person will fall out!
What type of force can provide centripetal force in the case of a car turning on a flat road?
What is friction?
Newton's law of gravitation states that every particle attracts every other particle with a force that is ________ proportional to the product of their masses.
What is directly?
Centripetal force is necessary for an object to follow a ________ path.
What is circular?
The formula for centripetal acceleration is ________.
What is ac = v2 / r?
For a passenger to truly be weightless, the normal force must be ____________.
What is Zero?
A ball is twirled in a horizontal circle on a string. At the instant the string is cut, the ball will travel in this direction.
What is tangent to the circle?
The gravitational force between two masses is ________ proportional to the square of the distance between them.
What is inversely?
Centripetal force acts in what direction?
What is towards the center of a circle?
Knowing the radius and time for an object to swing around a circle, what equation is used to calculate the speed?
What is C = 2*pi*r
At what point in a loop de loop does a passenger feel closest to weightlessness?
What is at the top of the circle?
These factors affect how fast a car can travel around a curve in the road.
What is coefficient of friction and radius of the circle?
The gravitational constant G is approximately equal to ________.
What is 6.67 × 10-11 N⋅m2/kg2?
Tension into the circle, Fg straight down
A student swings a ball on a string in a horizontal circle. If the ball's speed is doubled while the radius stays the same, the centripetal acceleration will _____________.
What is quadruple (increase by a factor of 4)?
What does a passenger feel at the bottom of an loop de loop of a Roller Coaster?
What is feels heavier or being pushed down in your seat
A 2000 kg car turning around a 30 meter radius curve on a flat, horizontal road with a coefficient of 0.67 can travel this fast.
What is 14.03 m/s?
The Earth is considerably more massive than the moon. How does the force between the Earth and moon compare to the force between the moon and Earth?
What is they are equal and opposite?
If a circular road was banked, rather than flat horizontal, how would the maximum safe velocity change?
What is the banked road decreases Fn, decreases Ff, decreases Fc, decreases velocity
What is 5.46 m/s2?
The Normal Force acting on a 400 kg Roller Coaster traveling 15 m/s at the bottom of a 20 meter loop is _____________.
What is 8420 Newtons?
What is the Tension of a 0.8 kg ball traveling at 3 m/s at the top of a 0.4 meter circle?
What is 10.16 Newtons?
If an astronaut weighs 900 N on Earth, what is her weight at a distance 3x further away?
What is 100 Newtons?