40. Gravitational force of attraction F exists between two point masses, A and B, when they areseparated by a fixed distance. After mass A is tripled and mass B is gives, the gravitational attractionbetween the two masses isа. 1/6 Fb. 2/3 Fс. 3/2 Fd. 6 F41. As a space ship from earth goes toward the moon, the force it exerts on the eartha. decreasesb. increasesc. remains the samed. none of these42. Two objects of fixed mass are moved apart so that they are separated by 3 times their originaldistance. Compared to the original gravitational force between them, the new gravitational force is.a. one-half as great b. one-third as greatc. 3 times greaterd. 9 times greater

40. Given data: - The gravitational force of attraction between two point masses is F.

Answered: 40. Gravitational force of attraction F…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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1. The gravitational force between two spherical masses is F₁. Which of the following would decrease the gravitational force between the objects to 0.25F,? a) b) d) decreasing the mass of one object to half its original value. increasing the distance by a factor of 2. decreasing the distance to 0.5 the original value. increasing the mass of both objects by a factor of 2.
3. Four particles are arranged as shown in the figure below. Find the net gravitational force on m,. 0.500 m m3 m2 m, = 1.00 kg m, = 1.00 kg 0.500 m 0.500 m m, = 0.500 kg m, = 2.00 kg m4 m, 0.500 m
3. Two astronauts in space, each will a mass of 100 kg, are 2 meters apart from one another. a) What is the gravitational force between them? b) Both astronauts are initially at rest, but the force of gravity between them will cause them to accelerate toward one another. At what rate will they accelerate toward one another? (a = F/m.) ans. a) 1.67 x 10-7 N %3D
6. The Sun has a mass that is around 300,000 times more than the Earth's. Why isn't the main gravity force that you feel coming from the Sun instead of the Earth? vity eguations are useful in different circumstances. (7b/7c won't be tested)
Two objects are attracted to each other by a gravitational force F. If the distance between the objects is doubled, what is the new gravitational force between the objects in terms of F? a. 1/9F b. 4F c. 1/4F d. 9F
14. "Weighing the moon": Knowing the mass of the Earth, ME, Earth-Moon distance, R, and period of moon orbiting around the Barycenter is T. The mass of the Moon can be determined as 47n? R3 (А) Мм GT2 47?R3/2 (B) Мм GT2 4n?R3 (C) Мм – MẸ GT? 4n²R3 (D) MM = MẸ GT2
5) What is the gravitational force of attraction between the Earth and the Sun? 30 R2/0
22 1. The earth has a mass of 5.98 x 1024 kg and the moon has a mass of 7.35 × 10²2 kg. The distance from the centre of the moon to the centre of the earth is 3.84 x 10³ m. A rocket with a total mass of 1200 kg is 3.0 × 108 m from the centre of the earth and directly in between the earth and the moon. Find the net gravitational force on the rocket from the earth and moon. 2. A 500 kg satellite experiences a gravitational force of 3000 N, while moving in a circular orbit around the earth. a. Determine the radius of the circular orbit. Round to 2 significant figures. b. Determine the speed of the satellite. Round to 2 significant figures. c. Determine the period of the orbit. Round to 3 significant figures.
What is the gravitational force that two 70 kg people exert on each other when standing 15 m apart? O A. 1.67x10-9 N O B. 2.22x10-11 N O C. 6.67x10-11 N O D. 2.50x10-8 N
An astronaut of mass m experiences a weight of mg upon the surface of the moor of radius R. Identify the gravitational force exerted on the astronaut by the moon in orbit a distance of 3R above the surface of the moon. A. 1/16 mg B. 16mg C. 1/9 mg D. mg E. (1/3)mg
14 Four 9.5-kg spheres are located at the corners of a square of side 0.80 m. Calculate the magnitude and direction of the gravitational force exerted on one sphere by the other three. A. 1.08x10-8 N B. 1.80x10-8 N C. 1.21x10-8 N D. 1.12x10-8 N E. None of the above
2. Two objects attract each other gravitationally with a force of 2.5 x 10-10N when they are 0.25 m apart. Their total mass is 4.0 kg. Find their individual masses.

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40. Gravitational force of attraction F exists between two point masses, A and B, when they are separated by a fixed distance. After mass A is tripled and mass B is gives, the gravitational attraction between the two masses is a. 1/6 F b. 2/3 F c. 3/2 F d. 6 F