physic
posted by susan .
Two spherical balls are placed so their centers are 2.6 m apart. The force between the two balls is 2.75 x 1012 N. What is the mass of each ball if one ball is twice the mass of the other ball?

Use Newton's universal law of gravity.
F = G M1 M2/R^2
In this case, M2 = 2 M1. Therefore
F = 2 M1^2/R^2.
M1 is the mass of the smaller sphere. R is the separation. Look up the universal constand G; it must be in your notes, or textbook.
Solve for the smaller mass, M1. Double that for M2. Show your work if further help is needed.
Respond to this Question
Similar Questions

physics
Two identical balls each have a charge of 7.5x10^6C. The balls hang from identical strings that are 8‹ from the vertical because of the repulsive force between the charged balls. The balls are separated by a distance of 10cm. … 
Physics
Two balls are approaching each other head on. Their velocities are + 9.55 and 11.0 m/s (a) Determine the velocity of the center of mass of the two balls if they have the same mass. (b) Determine the velocity of the center of mass … 
Physics
Two balls are approaching each other headon. Their velocities are +10.00 and 12.8 m/s. (a) Determine the velocity of the center of mass of the two balls if they have the same mass. m/s (b) Determine the velocity of the center of … 
physics please help :)
a.the gravitational force between 2 electrons 1.00m apart is 5.42x10^71 N. Find the mass of an electron. b.2 spherical balls are placed so their centres are 2.6m apart. The force between the balls is 2.75x10^12N. What is the mass … 
physics
Two balls are approaching each other headon. Their velocities are +9.30 and 12.1 m/s. Determine the velocity of the center of mass of the two balls for the following conditions. (Use the sign of your answer to indicate the direction.) … 
physics
Two balls have their centers 2.0 m apart. One ball has a mass of m1 = 8.3 kg. The other has a mass of m2 = 5.9 kg. What is the gravitational force between them? 
physics
Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.14g and a charge of magnitude q. the balls are attracted to each other. When in equilibrium, the balls are separated by a distance of 2.05cm and … 
Gen physics
Two balls are approaching each other headon. Their velocities are +11.9 and 10.5 m/s. Determine the velocity of the center of mass of the two balls if (a) they have the same mass and (b) if the mass of one ball (v = 11.9 m/s) is … 
physics
Two balls are approaching each other headon. Their velocities are +11.9 and 10.5 m/s. Determine the velocity of the center of mass of the two balls if (a) they have the same mass and (b) if the mass of one ball (v = 11.9 m/s) is … 
physics
Two balls have the same mass. One ball moving along the positive xaxis and the other ball moving along the positive yaxis undergo perfectly inelastic collision. What can you say about the motion of the balls after the collision?