Gravitational Fields
A field is defined as...
an area of influence
What two factors affect the gravitational attraction of two objects? (Hint Newton discovered this)
gravity attracts any two objects depending on their masses and their distance apart.
For objects moving in a circle there is a net force acoting towards the _______________________.
center
What equation is used to determine the speed of an object in uniform circular motion?
V = 2(pi)r / T
How fast can Nate K run the 800m?
2:02
Are gravitational force fields vector or scalar and why?
What is the GRAVITATIONAL constant
6.67 x 10^-11
Nic is whirling a rock attached to a string overhead in a horizontal circle. The rock makes a complete loop in 0.50 s and the string is 0.60 m long. a. Find the speed of the rock b. Find the centripetal acceleration of the rock
a. 7.53 m/s
b. 95 m/s^2
A toy plane makes a complete circle. The circle has a radius of 200m in 20 seconds. What is the speed of the plane?
62.8 m/s
Within a 3.5 year period, he became mayor of Buffalo, governor of New York, and president of the US
Grover Cleveland
what are the three things g stands for:
accleration due to gravity, gravitational field strength, and 9.8
Calculate the force of gravity between two physics students who have a mass of 75 kg and 85 kg and are seated 1.0m apart.
4.2 x 10 ^-11
On a frictionless corner what two forces act on a car.
Force of gravity and Normal Force
The direction of velocity is @ any time is .....
tangent to the circle
What state was Mrs. Decker born in?
NJ
A satellite orbits the Earth at a radius of 2000m. What is it's orbital period? The mass of the earth is 5.98 x 10^ 24kg.
0.028 seconds
A 4000kg Earth Satellite has an orbital radius of 8 x 10 ^ 5 meters. At what speed does it travel? Earth has a mass of 5.98x10^24 kg.
498,582,500 m/s
A 5.0 kg mass is swung in a vertical circle of radius 0.40 m. It is attached to a string that can take 125 N of tension before breaking. What is the maximum speed of the mass?
2.47 m/s
What is the equation for centripetal acceleration if you have radius and the period....
(4pi^2r)/T^2
How many chickens does Mrs. Decker have?
7
A satellite travels around a 5.20x1023 kg planet with an orbital radius of 1.1x107 m. What is the orbital period of the satellite?
about 39000 seconds
A 3.2x104 kg satellite orbits Neptune at a distance of 8.60x108 m from its center. If the satellite is traveling at a speed of 2820 m/s, what is the mass of Neptune?
1.03 x 10 ^ 26 kg
A 2500 kg rollercoaster completes a loop of radius 16 m in 3.00 s. a. Draw an FBD of the coaster at the top of the loop. b. Determine the speed of the coaster
33.51 m/s
Adrian travels at 3 m/s in a circle on his scooter. He made a radius of 2.0m. What is Adrian's centripetal acceleration?
4.5 m/s^2
What solemnity was on Wednesday, March 25?
Solmenity of the Annuciation of the Lord