Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
Glencoe Physical Science 2012 Student Edition (Glencoe Science) (McGraw-Hill Education)
1st Edition
ISBN: 9780078945830
Author: Charles William McLaughlin, Marilyn Thompson, Dinah Zike
Publisher: Glencoe Mcgraw-Hill
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Chapter 3.2, Problem 14PP
To determine

The net force on the sky diver.

Expert Solution & Answer
Check Mark

Answer to Problem 14PP

The net force on the sky diver is 500N(down)

Explanation of Solution

Given info:

Constant velocity, g=10m/s downward

Formula used:

Write the expression to calculate the net force.

  Fnet=WAR

Here,

  • W is the weight.
  • AR is the air resistance force.

Calculation:

Substitute the given values in the above equation.

Suppose that you have a mass of 50kg . Your weight, then is

  w=mg=(50kg)(10m/s)=500N

The magnitude of the vertical velocity is essentially zero.Since your weight and the air resistance force pull you in opposite directions, the net force on you equals your weight − air resistance.

  Fnet=WAR=500N0N=500N(down)

Conclusion:

Hence, the net force on the sky diver is 500N(down) .

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