Mechanics Gravity: The law of universal gravitation by Nathaniel Page Stites, M.A./M.S. Reading Quiz Teach with this 1. Which of the four fundamental forces in physics – strong nuclear, electroweak, electrostatic, or gravitational – is the least understood? strong nuclear electroweak electrostatic gravitational 2. The Law of Universal Gravitation was the result of the work of Albert Einstein. Robert Hooke. Isaac Newton. Henry Cavendish. 3. According to the Law of Universal Gravitation, the force of gravity between two objects is directly proportional to the distance between the objects. the product of the masses of the objects. the gravitational constant. the mass of Earth. 4. According to the Law of Universal Gravitation, the force of gravity between two objects is inversely proportional to the gravitational constant. the product of the masses of the objects. the square of the distance between the objects. the mass of Earth. 5. What did Henry Cavendish do that allowed him to measure the mass of Earth? He demonstrated that the sun was at the center of our solar system. He determined the value of the gravitational constant. He calculated the acceleration of objects near Earth’s surface. He compared Earth's orbit to those of other planets. 6. Newton's most important contribution to our understanding of gravity was that objects fall toward Earth when dropped. true false 7. A satellite in space is exactly halfway between Earth and the moon. Earth’s mass is calculated to be 5.98 x 1024 kg, while the moon’s mass is 7.35 x 1022 kg. Is the force of gravity stronger between Earth and the satellite or the moon and the satellite? Gravity is stronger between Earth and the satellite than between the moon and the satellite. Gravity is stronger between moon and the satellite than between the Earth and the satellite. Gravity is equal since the satellite is at exactly midway between Earth and the moon. There is not enough information to tell. 8. Using Newton's Law of Universal Gravitation, a scientist could predict which of the following? the force of gravitational attraction between two people in a room the location of a planet in the solar system the mass of a planet’s moon All of the answers are correct. Score Quiz
