29/03/2020 Gravitational Fields(Senior Class Physics Study by Topics) 0Comments by Gate Academy Welcome to your Gravitational Fields(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Suppose the moon had twice as much mass as it now does and still orbited the Earth at the same distance. In that case, the ocean bulges on Earth would beLarger.Not significantly different.Smaller.Unequal in size.2. Which law states every action force has an equal and opposite reaction force?Newtons 3rd lawNewtons 1st lawNewtons 4th lawNewtons 2nd law3. Tidal forces in general are the result ofTwo or more sources of gravitation.A combination of any kind of forces acting on a body.The inverse-square law.Unequal forces acting on different parts of a body.4. Passengers in a high-flying jumbo jet feel their normal weight in flight, while passengers in the orbiting space shuttle do not. This is because passengers in the space shuttle are Beyond the main pull of Earth's gravity.Above the Earth's atmosphere.All of theseWithout support forces.5. The amount of potential gravitational energy possessed by an object is not proportional toHeightMassGravitySpeed6. How does acceleration of an object change in relation to its mass? Directly proportional.Inversely proportional.Acceleration doesn't depend on mass at all.7. Some of the work done on the cart became the cart’s potential energy, and some of the work was converted into heat by friction.All the work done on the cart was transformed into the cart’s potential energy.The cart had no kinetic energy at the top of the ramp because all the work done on the cart was converted into heat by friction.The work done on the cart was equally divided between the cart’s potential and kinetic energy.8. Half way to the center of a planet of uniform density, your weight compared to that at the surface would beOne-quarter.One-half.Three-quarters.The same as at the surface.9. Which of these three produces the greatest tidal effect on you right now? The sunThe moonThe earth10. Inside a freely falling elevator, there would be no Gravitational force on youApparent weight for you.Both of theseNone of these11. If the sun collapsed to a black hole, the Earth's gravitational attraction to it would be The same.Less.More.12. Describe the lines of equipotential near to a large mass. none of the aboveLines are concentric and spaced equidistant from each otherLines move radially away from the centre of the massLines are concentric and spaced further apart from each other as they move away from the centre of the mass.13. As a ball falls, the action force is the pull of Earth's mass down on the ball. What is the reaction force?Air resistance acting against the ballNonexistent in this caseThe acceleration of the ballThe pull of the ball up on the Earth14. What type of motion is shown by a curved line on a position vs time graphConstant velocityAccelerationAt rest15. Which produces a greater tidal effect in your body, the moon or a 1-kg melon held above your head? The melonNot enough information is given to make a reasonable estimate.The moon16. Which of the following is NOT true Motion can exist without a forceForce possess the capability to change motionThere must be a force to change a systems motionForce is required to maintain a constant state of motion17. The amount of gravitational force that acts on the space shuttle while in orbit isAlmost as much as the shuttle's weight on the Earth's surface.The same as the shuttle's weight on the Earth's surface.Nearly zero.18. What is the acceleration of an object whose net force is 150N and has a mass of 25kg6N5N10m/s/s6m/s/s19. When calculating the force of gravity between two objects, you need to measure the distance between:The points where the objects surfaces are closest to each otherThe points where the objects surfaces are farthest away from each otherThe centers of mass of the two objectsTwo arbitrary points within the objects' mass20. For lunar tides to occur in the human body The Earth's gravitation would have to be incredibly small.parts of the body would have to be appreciably closer to the moon than other parts.Most of the body would have to be in the liquid state.But there are lunar tides in the body, as evidenced by women's monthly menstrual cycles.21. Where is the value of Gravitational acceleration minimum ? Alps - EuropeTropic of cancerEquatorPoles22. Inside a freely falling runaway elevator, your Gravitational interaction with the Earth is zero.Acceleration is zero.Apparent weight is zero.All of these23. 234124. An asteroid exerts a 360-N gravitational force on a nearby spacecraft. If the spacecraft moves to a position three times as far from the center of the asteroid, the force will be120 N.40 N.1080 N360 N.25. A weight watcher who normally weighs 400 N stands on top of a very tall ladder so she is one Earth radius above the Earth's surface. How much would she weigh there?0400 N100 N200 N26 out of 25Time is Up! Time's up
