Search: Physics (Gravitation)

Number of results: 95,677

Physics - Newton's Law of universal gravitation
Describe how Newton used each of the following phenomena to support the law of universal gravitation a) the orbit of the moon b) kepler's third law
Sunday, August 22, 2010 at 2:38pm by Shaila

physics, plehase help
The force of gravitation between two objects. Is 500 Newton's. What would the force of gravitation be if the distance between these two objects increased by 10 times?
Saturday, January 30, 2010 at 10:00am by coco

Physics / Astronomy
Here is my question: Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d. I&#...
Wednesday, May 28, 2008 at 8:58pm by Barry

PHYSICS
assume you have a mass of 100 kg on earth. on the moon, where the gravitation of the moon is 1/6 gravitation of the earth, what is your mass on the moon and what is your weight on the moon
Wednesday, December 22, 2010 at 7:30pm by Katie

physics
Law of gravitation of course. That is what we are using.
Saturday, March 14, 2009 at 6:37pm by Damon

Physics-Gravitation
GPE= GM1*M2/distance
Sunday, January 2, 2011 at 4:50pm by bobpursley

Physics Gravitation Weight
W=mg+ma =m(g+a) = =m(g+0.3g)= 1.3mg
Saturday, June 16, 2012 at 5:30pm by Elena

Physics -HS Honors
When computing the gravitation force, how do you know what the direction of the solution?
Tuesday, March 11, 2008 at 8:39pm by Joan

Physics
the hubble telescope has a mass of 1.5 x 10^4 kg and its orbiting the earth 596 km above the ground surface.the earths radius is 6.38 x 10^3km. CAlculate a)the force of gravitation on the telescope due to the earth's pull. given: G=6.67 x 10^-11Nm/kg and the mass of earth ...
Monday, October 29, 2007 at 3:53pm by johnny

Physics Help!!
Comparing Einstein's and Newton's theories of gravitation, can the correspondence principle be applied? and Why or Why not? a)Yes b)No
Monday, May 7, 2012 at 12:08pm by Jake

10th grade
Check this site: http://en.wikipedia.org/wiki/Gravitation
Tuesday, October 5, 2010 at 3:39pm by GuruBlue

Physics-Gravitation
when i plugged in the values i got 4.62E10 is that number suppose to be negative or positive?
Sunday, January 2, 2011 at 4:50pm by Becky

Physics
use T^2 = 4*pi^2*r^2/GM T and r are given, G -Universal constant of gravitation. Compute M - mass of star
Friday, June 29, 2012 at 2:30pm by ajayb

Physics
This is only one step - The Universal Law of Gravitation F=G• m•M/(R)² R= 8.00 X 10^7 m, m=62 kg
Monday, June 11, 2012 at 2:53pm by Elena

6th grade science (physics)
explain and describe Law of Universal Gravitation in relation to force, mass and distance
Sunday, April 18, 2010 at 12:26pm by Tyler

physics
if the masses remain the same ,but the separation is decreased to one-half of the original distance . what happens to the gravitation force?
Monday, November 26, 2012 at 9:42am by mary grace

Physics
What would the gravitation PE and Elastic PE be like on the moon?
Friday, June 24, 2011 at 1:20am by Janice

Physics
G is the universal gravitation constant. That means, it is constant.
Sunday, November 15, 2009 at 6:57pm by bobpursley

6th grade science (physics)
Try here: http://search.yahoo.com/search?fr=mcafee&p=Law+of+Universal+Gravitation+in+relation+to+force%2C+mass+%26+distance Sra
Sunday, April 18, 2010 at 12:26pm by SraJMcGin

Physics
PE= GMm/r ....see the law of gravitation. 1/2 mv^2=GMm/r remember that density=M/(4/3 PI r^3)
Tuesday, December 16, 2008 at 7:10pm by bobpursley

physics (Newton's law of gravitation)
Duplicate post. See the answer I posted to your other post of this question.
Sunday, April 21, 2013 at 9:57pm by drwls

Physics
Consider energy. Gravitation energy in ball=KE when it hits mg6+mg(10sin30)=1/2 m v^2 solve for v
Saturday, February 4, 2012 at 2:04am by bobpursley

Physics
What is the gravitation field strength of a height above the surface of the earth? R is the radius of the earth. Ans a, pls correct
Thursday, October 13, 2011 at 1:31am by Joy

physics
The force of gravity is dependent on the two masses involved,if you halved the distance then force of gravitation will becomes double of the orignal
Sunday, August 19, 2012 at 6:24am by Anonymous

physics
An electron is released from rest in a uniform electric field of magnitude 2.00 x 10e4 N/C. Calculate the acceleration of the electron (neglect gravitation).
Thursday, February 2, 2012 at 5:50pm by Shakirah

physics
Consider the bending of light by the gravitation of the Sun as described by Newtonian physics. Light of frequency f passes at a distance d from the center of the Sun, which has a mass M. Show that the bending angle of the light is proportional to M/d.
Wednesday, May 28, 2008 at 11:31am by Greg

physics
On a distant planet, the acceleration due to gravity is 5.30 m/s2, and the radius is 4600 km. Use the law of gravitation to calculate the mass of this planet.
Friday, February 25, 2011 at 9:11am by Student

Physics-gravitation
The weight of an object is essentially calculated using Newton's law of gravitation, given by: Gm1m2/r², where G=gravitation constant, = 6.674 N(m/kg)² r=distance between the centre of mass of two objects, in this particular case, the centre of the earth...
Saturday, November 6, 2010 at 11:21pm by MathMate

Physics - weighing a planet
Explain how you can weigh a planet? ( Is it by the combination of the netwons law of univeral gravitation and keplers third law; t^2/r^3 = 4(pi)^2/G(Msun) )
Sunday, August 22, 2010 at 2:42pm by Shaila

physics
can someone please help me with this question quick... Which of the following equations expresses Newton's law of universal gravitation? a. Fc=MVt^2/r b. Fg=M1M2/r c. g=Gme/r^2 d. Fg=Gmme/r^2 i really need help..thanks:-)
Friday, February 20, 2009 at 5:45pm by Bella

Physics
Based on Newton's law of universal gravitation, F=GMm/r² which means that the weight would be inversely proportional to the square of the distance from the centre of the Earth. If H is the altitude when the weight becomes 3/4 of what's on the surface, then (re...
Saturday, October 3, 2009 at 11:05am by MathMate

Physics
According to the law of universal gravitation, there is force of attraction between any two bodies in the universe, WHY CAN'T YOU FEEL THIS FORCE BETWEEN YOU AND YOUR SEATMATE? ~>Thanks for those who are helping!
Monday, October 19, 2009 at 9:18am by Shane

physics
The radius of a planet R1 and satellite revolves round it in a circle of radius R2. The time period of revolution is T.find the acceleration due to the gravitation of the planet at its surface.
Sunday, May 26, 2013 at 1:37pm by subharaj

physics(universal law of gravitation)
a satellite has a mass of 100 kg and is located at 2 x 10^6 m above the surface if the Earth. wHAT is the potential energy associated with the satellite at this location? What is the magnitude of the gravitational force on the satellite?
Thursday, January 14, 2010 at 10:11pm by Nina

physics
he universal law of gravitation describes the force of gravity between two bodies. What does it say about the strength of the gravitational field? How does the size of the object affect the use of the gravitational field equation?
Tuesday, May 15, 2012 at 7:11pm by dreamygirl

Physics
What would be the weight of a 1.0kg mass on the surface of Mars? The mass of Mars is 0.11 that of the earth, and its radius is 0.53 that of the earth.
Wednesday, December 15, 2010 at 6:52pm by Universal Gravitation

physics
an electron (m= 9.11 x 10^-31 kg) and a proton (m+ 1.6 x 10^-27 kg) are separated by 1.0 x 10^-10 m. what is the gravitation force between them? help please!
Monday, January 28, 2013 at 6:19pm by Isis

physics
two lead spheres whose diameters are 20 cm and 2 cm are placed with centres 100 cm apart. Calculate the force of gravitation between them.(density of lead =11500 kg/m^3
Wednesday, May 15, 2013 at 10:02am by Dhananjay

Physics
A space probe is carried by a rocket into outer space where it continues to move on its own in a straight line. What keeps the probe moving? Is the answer: the gravitation forces from diﬀerent stars and planets
Friday, March 1, 2013 at 8:08pm by Sally

physics
Ms is the mass of Saturn, Md is mass of the dog. Are you not familiar with the Law of Gravitation? d is the distance the dog is from the center of Saturn (ie, radius). You need to look this up in the text.
Monday, November 1, 2010 at 6:39pm by bobpursley

Physics
I have to create a teaching aid for physics based on the principles i have learnt like gravitation , mechanical properties and many more. I am not able to find the right experiment to demonstrate infront of my teacher.Please help me deal with this by providing information ...
Thursday, January 26, 2012 at 10:31am by confused

science
Explain the law of universal gravitation
Tuesday, January 10, 2012 at 12:39am by glenn

Physics
Starting from Newton’s law of universal gravitation, show how to find the speed of the moon in its orbit from the earth-moon distance of 3.9 × 108 m and the earth’s mass. Assume the orbit is a circle.
Friday, December 16, 2011 at 10:37am by Calitryphosa

Physics Gravitation Weight
What will a spring scale read for the weight of a 75-kg woman in an elevator that moves upward with acceleration of 0.30-g? Unsure of how to solve this problem. Can someone please walk me through it step by step. Thank you
Saturday, June 16, 2012 at 5:30pm by Mike Joseph

Maths and Physics
Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 (10 marks). Kind Regards
Tuesday, April 19, 2011 at 10:19am by David

physics
We will be happy to critique your work after you have shown some effort. Hints: 1. the length does not matter 2. Torque = force * (lever arm) 3. Compute the forces between each the origin object and each of the other two, and add them vectorially. Use Newton's universal ...
Friday, July 11, 2008 at 8:08am by drwls

Physics
Using newton's law of universal gravitation and the following data calculate the theoretical value of the acceleration due to gravity on mars. Mars Mass= 6.4185x 10^23 kg Radius (equatorial)= 3.3962x 10^6m
Tuesday, November 9, 2010 at 5:54pm by Amy

Science
What is the best definition for The law of universal gravitation ?
Monday, January 16, 2012 at 12:04pm by Jim

science
The gravitation pull of a object depends 2 factors what are they
Tuesday, January 10, 2012 at 12:37am by glenn

6th grade science
What is the universal law of gravitation?
Thursday, March 18, 2010 at 9:28pm by mary

science
how does mass differ from weight what is law of universal gravitation
Monday, October 26, 2009 at 4:14pm by dai

science
What do you think, and why? TAke a look at Newton's law of Gravitation.
Monday, October 13, 2008 at 4:15pm by bobpursley

Physics
Is initial energy (KE and PE) has to equal the KE at impact. KEimpact=PEorig+KEorig 1/2 m vf^2=mgh + 1/2 m vi^2 solve for vf. Notice mass divides out, you know h=3, vi=1.8m/s, and g is Earth's gravitation field (9.8N/kg)
Monday, July 5, 2010 at 8:55pm by bobpursley

Physics
The ïn space"means that the total gravitation effect is dependent on the spheres only. Do this as vectors. Gravity is a vector, so the net force (to the right) is Fnet= G*M1 ( - ml/.1060^2 + mr/.2070^2) where M1 is 2.43kg, ml is 5.17kg, mr is 6.20 kg)
Saturday, December 15, 2007 at 10:45am by bobpursley

Solar system
According to the theory of gravitation, the earth must be continually “falling” toward
Sunday, December 31, 2006 at 6:35pm by Don

physics
Use Newton's law of gravitation. g=(m_1)(m_2)(G)/(d^2) m_1 = mass of first body m_2 = mass of second body G = gravitational constant (value is unimportant for this particular problem) d = distance between bodies.
Friday, November 14, 2008 at 7:33pm by Noether

Math And Physics
Law of Gravitation- Find an expression for the magnitude of the initial velocity that a projectile must possess in order to leave the earth when air friction is neglected. The gravitational constant for g is, G = 6.67428*10^-11 m^3 Kg^-1 s^-2 Please answer the question fully ...
Sunday, May 1, 2011 at 12:18pm by Dwayne

science
what is the 3 laws of motion? & what is the law of universal gravitation plz answer thx in advance
Tuesday, January 22, 2008 at 5:58pm by sammy

physics college
Use Newton's Law of Gravitation to compute the work W required to propel a 1100 kg satellite out of the earth's gravitational field. You may assume that the earth's mass is 5.981024 kg and is concentrated at its center. Take the radius of the earth to be 6.37106 m ...
Wednesday, May 16, 2012 at 4:38pm by lost

physics
safiya places a 5.o-kilogram brick on chair in the classroom.the chair is 1.o meter off the ground.what is the gravitation potential of the brick if it falls off the chair?remember that gravity equals 9.8 meter per second squared.
Wednesday, March 9, 2011 at 10:34pm by ROSE

science
Okay. Can you tell about velocity, accelration, motion, position, friction, gravity, weight and gravitation.
Monday, November 16, 2009 at 6:18pm by Anonymous

physics
calculate the force of Earth's gravity on a spacecraft 12,800 km (2 Earth radii) above Earth's surface if its mass is 1350 kg. i know the universal gravitation formula is Fg = G [(m1 m2)/ r^2] but im not getting anywhere near the multiply choice answers of: 14,470, ...
Monday, October 26, 2009 at 10:03pm by Sasha

physics....
The universal law of gravitation describes the force of gravity between two bodies. What does it say about the strength of the gravitational field? How does the size of the object affect the use of the gravitational field equation? i know that the gravitational field strength ...
Friday, June 1, 2012 at 8:27pm by kennedy

Physics
Newton's law of gravitation: F = G m1 m2 /r^2 let m2 = mass of ice cube and s = G m1/r^2 so, F = s m2 rearranging, s = m2/F let V = orbital speed centripetal acceleration = V^2/r For an object to remain in orbit s must equal the centripetal acceleration so, s = V^2/r
Wednesday, March 10, 2010 at 11:08pm by FredR

Physics
Assume the Earth is a perfect sphere of radius 6,400 kilometers. Find the weight of a 75.0 kg person at the North pole. Find the weight of this same person at the equator. (You don't need to use Newton's Law of Gravitation but you do need to analyze the radial/...
Thursday, July 26, 2012 at 11:59am by Zac

science
Can you tell me more about velocity, accelration, motion, position, friction, gravity, weight and gravitation.
Monday, November 16, 2009 at 6:18pm by Anonymous

science
what factors affect the friction forces between two surfeces 2a what is the law of universal gravitation
Tuesday, October 20, 2009 at 8:57pm by sophie

COLLEGE PHYSICS
I would use energy concepts. The gravitation force down the hill is mgSinTheta. So the change in PEnergy is mgSinTheta*57 Now, write the energy equation: Initial PE=Final KE + friction work mg*57*sin25= 1/2 m v^2 + 70*57 Check my thinking
Thursday, October 18, 2007 at 3:54am by bobpursley

Physics Help
If we witness events taking place on the moon, where gravitation is weaker than on Earth, would we expect to see a gravitational red shift or a gravitational blue shift? and Explain please a)blue shift b)red shift c)no shift
Wednesday, May 9, 2012 at 1:29am by Jake

Physics-Gravitation
What is the gravitational potential energy of a two-particle system with masses 5.4 kg and 5.0 kg, if they are separated by 1.3 m? If you triple the separation between the particles, how much work is done (b) by the gravitational force between the particles and (c) by you? ...
Sunday, January 2, 2011 at 4:50pm by Jessica

Physics Help please
If we witness events taking place on the moon, where gravitation is weaker than on Earth, would we expect to see a gravitational red shift or a gravitational blue shift? and Explain please a)blue shift b)red shift c)no shift
Monday, May 7, 2012 at 11:33am by Jake

Science
a question regarding Universal Law Of Gravitation. If the clouds are 50 km. high , what is its proportional distance to a globe which is one foot in diameter ? Thank you :))
Wednesday, September 28, 2011 at 8:39am by Anna

physics
directly proportional Inellastic collision Inversely proportional Joule Lever arm Non inertial reference frame inertial reference frame Pascal Pascal's principal rate revolution rotation spring constant spring force universal gravitation Henry cavendish
Wednesday, May 27, 2009 at 8:38pm by chelsea

Physics 1
A shot-putter puts a shot (weight = 71.3 N) that leaves his hand at distance of 1.62 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.08 m above the ground. Include the correct sign for work. J (b) Determine the ...
Saturday, November 17, 2012 at 1:44pm by Anonymous

Physics
A shot-putter puts a shot (weight = 71.9 N) that leaves his hand at distance of 1.47 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.20 m above the ground. Include the correct sign for work. J (b) Determine the ...
Sunday, November 2, 2008 at 8:50am by Brandon

Physics
no idea all HELP appreciated!! A shot-putter puts a shot (weight = 70.3 N) that leaves his hand at distance of 1.45 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.15 m above the ground. Include the correct sign for ...
Monday, October 19, 2009 at 7:26pm by Joe

science
imagine you are in a spaceship flying from the earth - describe what you see from the space and how you feel as it moves out of the gravitation pull of earth?
Wednesday, August 25, 2010 at 8:13am by sarthak

Phyics
Well, Newtons gravitation law is force=GMm/d^2 but for you, mass m, your acceleration by falling in gravity must be Force=ma or a=F/m= GM/d^2
Friday, October 5, 2007 at 8:59pm by bobpursley

science
Can you tell about velocity, accelration, motion, position, friction, gravity, weight and gravitation. i mean 4th grade velocity.
Monday, November 16, 2009 at 8:16pm by Anonymous

physics (Newton"s law of gravitation)
Could anyone please help me with this problem? I would really appreciate it. The top of Mt. Everest is 8850 m above sea level. Assume that sea level is at the average Earth radius of 6.38×106 m. What is the magnitude of the gravitational acceleration at the top of Mt. ...
Sunday, April 21, 2013 at 6:37pm by Kathy

Physics
When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's interior is solid ...
Friday, January 25, 2013 at 4:15pm by arcos15

Physics
When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? The distribution of mass in the earth is spherically symmetric. The density of the earth is the same everywhere. The earth's interior is solid ...
Friday, January 25, 2013 at 4:14pm by arcos15

drwl please check
A shot-putter puts a shot (weight = 70.1 N) that leaves his hand at distance of 1.53 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.18 m above the ground. Include the correct sign for work. (b) Determine the change...
Tuesday, February 27, 2007 at 12:46pm by Mary

physics (Newton"s law of gravitation)
Please, can someone help me with this? A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is the magnitude of the ...
Sunday, April 21, 2013 at 11:15pm by Kathy

physics
Let: m = a small mass M = mass of the earth r = distance from the center of mass m to the earth's center. Constants: G = 6.67x10^-11 m^3/kg.s^2. M = 5.98x10^24 kg R = 6.38x10^6 m (Earth's radius) Law Of Gravitation: F = GmM/r^2 F = m(GM/r^2) = mg GM/r^2 = 3.00 m/s^2 ...
Saturday, December 6, 2008 at 6:43pm by GK

Physics HELLLPPPP
When we say that the weight of an object is Mg, and that g = 9.8 N/kg, what assumptions are we making? Which of the below? -The distribution of mass in the earth is spherically symmetric. -The density of the earth is the same everywhere. -The earth's interior is solid ...
Friday, January 25, 2013 at 4:16pm by NATTT

Physics
The data you need is the Mass of the Earth, Mass of the Moon, the radius of Moons orbit, and the universal gravitation constant. From the centers of Earth adn Moon, you know that distance, then let some x be from center of earth. Find Force gravity of Earth at x, then find ...
Sunday, September 13, 2009 at 9:42am by bobpursley

physics (Newton's law of gravitation)
Can anyone please help me with this question? I am really confused. A neutron star and a black hole are 2.400e+12 m from each other at a certain point in their orbit. The neutron star has a mass of 2.78×1030 kg and the black hole has a mass of 9.94×1030 kg. What is...
Sunday, April 21, 2013 at 9:57pm by Kathy

physics(universal law of gravitation)
The earth's radius is about Re = 6.4*10^6 m. At 2*10^6 m above the surface, you are R = 8.4*10^6 m from the center of the Earth. The acceleration of gravity is reduced by a ratio (6.4/8.4)^2 = 0.58 and g is reduced to g'= 5.7 m/s^2 The potential energy (relative to the...
Thursday, January 14, 2010 at 10:11pm by drwls

science
For goodness sake! Please use standard English. I just figured out what the 2a was = to a (with necessary space between) Please try some of the sites here: http://www.google.com/search?q=friction+forces+between+2+surfaces+%26+the+law+of+universal+gravitation&ie=utf-8&...
Tuesday, October 20, 2009 at 8:57pm by SraJMcGin

physics (Newton's Law of gravitation)
F = G m M/r^2 = 6.67*10^-11 (2.78*10^30)(9.94*10^30)/(2.4^2*10^24) = (6.67*2.78*9.94/5.76)10^(-11+60-24) = 32 * 10^25 Newtons That is a very large force !
Monday, April 22, 2013 at 9:03pm by Damon

Physics 3
A 2.3-keV proton is moving horizontally and passes perpendicular to the Earth’s magnetic field at a location where the field magnitude is 52.0 T. i) Determine the magnetic force on the proton? ii) Find the ratio of this force to the gravitation force on the ...
Wednesday, April 13, 2011 at 1:55pm by Ziera

C++ Programming
I NEED HELP WITH MY CODE!!! it won't compile right The formula for finding the force of gravity between two objects is Force = grav * (mass1 * mass2) / (radius * radius), where Force = the force of gravity between the two objects, grav = the universal gravitation constant...
Wednesday, February 13, 2008 at 11:12pm by sonnysn

Physics 180
Use conservation of energy. Compressed spring potential energy = Launch kinetic energy (1/2) k X^2 = (1/2) M Vo^2 X is the amount of spring compression. Solve for Vo. Vo = X*sqrt(k/M) The launch speed will be nearly the same for a vertical or horizontal launch, but you will ...
Sunday, October 2, 2011 at 2:08am by drwls

physics
Tom has a mass of 72.2 kg and Sally has a mass of 49.4 kg. Tom and Sally are standing 17.4 m apart on a massless dance ﬂoor. Sally looks up and she sees Tom. She feels an attraction. If the attraction is gravitation, ﬁnd its magnitude. Assume both can be ...
Thursday, December 13, 2012 at 9:30pm by Anonymous

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