Physics of the Moon :: physics science space

gravitative Force of BodiesAll bodies with mass exert a gravitational overstretch on the bodies around them, even you and me. The large the radius and mass of the carcass the larger the agitate. Most people know that the obligate of gravity on earth is a lot greater than on the slug, but how much larger is it, and how is gravity calculated? German astronomer Johannes Kepler (1576-1630) spent years sight the motion of planets and developed a set of laws for planetary motion. Years later his death Physicist Isaac Newton (1642-1727) used these laws to help him develop his law of normal gravitation.The law of Universal Gravitation states that every particle in the earthly concern attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the self-colored of the distance amongst them (Serway 424). This essential means that the force of gravity increases the larger the masses are and d ecreases the farther away the masses are. The formula to square up the the magnitude of the gravitational force isFg = G (M1M2)/R2G is the Universal Gravitational Constant, M1 and M2 is the mass of the two tendencys and R is the distance between them.On Earth the force of gravity causes all headings to accelerate at 9.8m/s2. For example, say you have a mass of 1kg on the come out of the closet of the earth. The force of gravity between the two objects is given byFg= (6.673x10-11)(5.9736x1024)(1)(6.3781x106)2Fg = 9.8 m/s26.672x10-11 is the value of the universal gravitational incessant (G), 5.9736x1024 is the mass of the Earth (M1) in kg, 1 is the mass of our object on the earths surface (M2) in kg, and 6.3781x106 is the distance between the essence of the Earth and the Earths surface (R) in meters. 9.8 m/s2 is the acceleration force between objects and the earthOn the moon this value is much less because the moon has a smaller mass and radius. If the same 1kg object is on the surface of the moon, the force of gravity on it is given byFg = (6.673x10-11)(7.349x1022)(1)(1.7381x106)2Fg = 1.6 m/s27.349x1022 is the mass of the moon in kg and 1.7381x106 is the radius of the moon in meters. On the moon objects experience roughly 1/6 the gravitational force they would on Earth.Two astronuats are playing catch on the moon. They couch and catch the ball at a height of 1.