Height 9800 50x 98 20 m in general the gravitational potential energy gpe arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in space. While a scale is the most accurate way to find the weight of an object you can get an approximation by using a handmade balance. Balance the middle of the string over a tall solid object so the cups can hang freely. The weight of the object at the surface of the earth is 20 n. To start tie string to the top of 1 cup then tie the end of the string to the top of another cup. Thus the height of the object is h 2r.
It is the product of the mass of the object multiplied by the acceleration due to gravity. The radius of earth is r 6400 km. Follow report by ankit1234 01102016 log in to add a comment answers. Today is my science exam please solve ask for details. The weight of an object is the force of attraction that the object has to the earth. An object of mass 50 kg has a gpe of 9800 j find the height of the object.
It is a basic calculation and it is often a fundamental step to solving other more. You may choose to calculate the weight of an object to solve a physics problem. Asked by udayan sarkhel 28th sep 2013 0724. The weight of the object at the surface of the earth is 20n and the radius of the earth is 6400 km. Find the weight of an object at a height of 6400 km above the earths surface. Find the weight of an object at a height of 6400 km above the earths surface.
The weight of the body depends on the mass and acceleration due to gravity. And the force between them is directly proportional to the product of their masses and indirectly proportional to the distance between them so wmg fmg fgmmr² mggmmr.