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Physics / Physics for Scientists and Engineers: A Strategic Approach with Modern Physics 3 / Chapter 11 / Problem 54P

Physics for Scientists and Engineers: A Strategic Approach with Modern Physics | 3rd Edition | ISBN: 9780321740908 | Authors: Randall D. Knight

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A 50 kg ice skater is gliding along the ice, heading due

Chapter 11, Problem 54P

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QUESTION:

Problem 54P

A 50 kg ice skater is gliding along the ice, heading due north at 4.0 m/s. The ice has a small coefficient of static friction, to prevent the skater from slipping sideways, but μk = 0. Suddenly, a wind from the northeast exerts a force of 4.0 N on the skater.

a. Use work and energy to find the skater’s speed after gliding 100 min this wind.

b. What is the minimum value of μs that allows her to continue moving straight north?

Questions & Answers

QUESTION:

Problem 54P

A 50 kg ice skater is gliding along the ice, heading due north at 4.0 m/s. The ice has a small coefficient of static friction, to prevent the skater from slipping sideways, but μk = 0. Suddenly, a wind from the northeast exerts a force of 4.0 N on the skater.

a. Use work and energy to find the skater’s speed after gliding 100 min this wind.

b. What is the minimum value of μs that allows her to continue moving straight north?

ANSWER:

Step 1 of 3

In this problem, we have to find the work and energy to find the skater's speed and also find the minimum value of \(\mu s\).

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