   Chapter 4, Problem 8P

Chapter
Section
Textbook Problem

Consider a solid metal sphere (S) a few centimeters in diameter and a feather (F). For each quantity in the list that follows, indicate whether the quantity is the same, greater, or lesser in the case of S or in that of F. Explain in each case why you gave the answer you did. Here is the list: (a) the gravitational force, (b) the time it will take to fall a given distance in air, (c) the time it will take to fall a given distance in vacuum, (d) the total force on the object when falling in vacuum.

(a)

To determine
The gravitational force on the sphere and the feather.

Explanation

The force of gravity on an object is expressed as the product of its mass and acceleration due to gravity.

At the same location, the force of gravity is directly proportional to the mass of the object. The greater the mass, the greater is the force of gravity on the object...

(b)

To determine
The time taken to fall in the medium of air.

(c)

To determine
The time taken to fall in vacuum.

(d)

To determine
The force on the sphere and feather during free-fall in vacuum.

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