# Physics

posted by .

In the figure, two balls are located in deep space. The black ball has mass 56kg and the red ball has mass 17kg. The distance between the two balls is r=24cm.
(a) Find the magnitude of the acceleration of the red ball.
m/s2
(b) If r is 5 times larger, with what factor will the acceleration of the red ball change?

(c) If the mass of the black ball is 45 times larger, with what factor will the acceleration of the red ball change?

(d) If the mass of the red ball is 50 times larger, with what factor will the acceleration of the red ball change?

• Physics -

If you had shown some work, I would be willing to help. You are apparently using the service to harvest answers. Good luck.

• Physics -

i'm not sure how to begin the problem at all. Or else I would have shown some work. thanks though

• Physics -

(a) Get the force acting on each ball from Newton's universal law of gravity. That's whereto begin.

Force = G*M1*M2/r^2 (same for both balls)
G = universal constant
M1 = black ball mass
M2 = red ball mass

The acceleration of the red ball will be that force divided by the mass of the red ball.

(b) What happens when you multiply r by 5?

(c) 45

(d) a = Force/M2 is unchanged

• Physics -

thank you for your help! I really appreciate it.

## Respond to this Question

 First Name School Subject Your Answer

## Similar Questions

1. ### 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. …
2. ### 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 …
3. ### physic

Two spherical balls are placed so their centers are 2.6 m apart. The force between the two balls is 2.75 x 10-12 N. What is the mass of each ball if one ball is twice the mass of the other ball?
4. ### Math

"In vase A, there are 3 red balls and 5 white balls. In vase B, there are 6 red balls and 4 white balls. Two balls are to be drawn at random, without replacement, from each vase. What is the probability of selecting 4 red balls?
5. ### physics

Two balls are approaching each other head-on. 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.) …
6. ### finite math

6 red balls, 5 black balls, 4 green balls, what is probability, 1 red ball and one black ball pick, with replacing ball
7. ### statistics

If a bag contains a set of 20 red balls, 10 green balls, and 15 black balls, then what is the possiblity of selecting (in this order) a red ball, a green ball, and a red ball. Without Replacement of the items selected. Can you explain …
8. ### 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 …
9. ### Gen physics

Two balls are approaching each other head-on. 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 …
10. ### stats

A jar contains 7 black balls and 25 red balls. You take 2 out without replacing them. Find a)the probability of drawing 2 red balls in a row, b) the probability of drawing a red ball, then a black ball, c) the probability that the …

More Similar Questions