Question

A science student holds a 55g egg out a window. Just before the student releases the egg, the egg has 8.0 J of gravitational potential energy with respect to the ground. What is the weight of the egg on earth?

Answer 1

Answer:

The gravitational potential energy is calculated by the product of mass of the object, gravitational acceleration and the height or the elevation of the object. We calculate as follows:

PE = mgh

8.0 J = .055 kg (9.81 m/s^2) (h)

h = 14.83 m

Answer 2

Mass of the egg=$0.055kg$

Potential Energy($P.E.$)=$8J$

Potential energy is calculated by the following formula: $mgh$

where, $m= mass\ of\ the\ object\\g= acceleration\ due\ to\ gravity\\h= height$

The height of the egg from the earth can be calculated as: $\frac{P.E.}{mg}$

Height =$\frac{8}{0.055\times 9.8} =\frac{8}{0.539} =14.84 m$

The weight of the egg on earth can be calculated as:$mg$

Weight=$0.055\times 9.8=0.539N$

The height and the weight of the egg are 14.84m and 0.539N, respectively.