Chapter 7, Problem 7.35P

a square of edge length 20.0 cm is formed by four spheres of masses m1 = 5.00 g, m2 = 3.00 g, m3 = 1.00 g, and m4 = 5.00 g. In unit-vector notation, what is the net gravitational force from them on a central sphere with mass m5 = 2.50 g?

A uniform solid sphere of radius R produces a gravitational acceleration of ag on its surface. At what distance from the sphere’s center are there points (a) inside and (b) outside the sphere where the gravitational acceleration is ag/3?

Calculate the gravitational potential V for a hemisphere of radius R with uniform mass distribution.

The inverse square law of gravitational attraction between two masses m1 and m2 is given by F = −Gm m r / || r ||3 , where r = x i + y j + z k . Show that F is conservative. Find a potential function for F.

Consider a satellite in elliptical orbit around a planet of mass M, and suppose that physical units are so chosen that GM D 1 (where G is the gravitational constant). If the planet is located at the origin in the xy-plane, then Explain the equations of motion of the satellite?

Four uniform spheres, with masses mA= 40 kg,mB = 35 kg, mC = 200 kg, and mD= 50 kg, have (x, y) coordinates of (0, 50 cm),(0, 0), (-80 cm, 0), and (40 cm, 0), respectively. In unit-vector notation,what is the net gravitational force on sphere B due to theother spheres?

A uniform, solid sphere, of radius R=0.84km, produces a gravitational acceleration of ag on its surface. At what distance from the sphere's center are there points (a) inside and (b) outside the sphere, where the gravitational acceleration is ag/3?

two point particles are fixed on an x axis separated by distance d. Particle A has mass mA and particle B has mass 3.00mA. A third particle C, of mass 75.0mA, is to be placed on the x axis and near particles A and B. In terms of distance d, at what x coordinate should C be placed so that the net gravitational force on particle A from particles B and C is zero?

A meteoroid is moving towards a planet. It has mass m = 0.18×109 kg and speed v1 = 3.8×107 m/s at distance R1 = 1.6×107 m from the center of the planet. The radius of the planet is R = 0.26×107 m. The mass of the planet is M = 10×1025 kg. There is no air around the planet. a)Enter an expression for the total energy E of the meteoroid at R, the surface of the planet, in terms of defined quantities and v, the meteoroid’s speed when it reaches the planet’s surface.  b)Enter an expression for v, the meteoroid’s speed at the planet’s surface, in terms of G, M, v1, R1, and R.  c)Calculate the value of v in meters per second.