A typical muscle fiber is 2.0 cm long and has a cross-section area of 3.1 ×10^-9 m^2 . When the

Name: Problem 6, Chapter 10: College Physics: A Strategic Approach
Uploaded: 2020-11-07T07:26:02-08:00
Duration: 1 min 20 s
Channel: Laszlo Zalavari
Description: A typical muscle fiber is 2.0 cm long and has a cross-section area of 3.1 ×10^-9 m^2 . When the muscle fiber is stimulated, it pulls with a force of 1.2 mN. What is the work done by the muscle fiber as it contracts to a length of 1.6 cm ?

step 1 Hello everyone. In this problem we're asked to find the word done by a muscle fiber as it contra

Question

A typical muscle fiber is $2.0 \mathrm{cm}$ long and has a cross-section area of $3.1 \times 10^{-9} \mathrm{m}^{2} .$ When the muscle fiber is stimulated, it pulls with a force of $1.2 \mathrm{mN}$. What is the work done by the muscle fiber as it contracts to a length of $1.6 \mathrm{cm} ?$

   A typical muscle fiber is $2.0 \mathrm{cm}$ long and has a cross-section area of $3.1 \times 10^{-9} \mathrm{m}^{2} .$ When the muscle fiber is stimulated, it pulls with a force of $1.2 \mathrm{mN}$. What is the work done by the muscle fiber as it contracts to a length of $1.6 \mathrm{cm} ?$

College Physics: A Strategic Approach

Randall D. Knight,… 4th Edition

Chapter 10, Problem 6

Instant Answer

Solved by Expert Laszlo Zalavari

11/07/2020

Step 1

The initial length of the muscle fiber is $2.0 \, \text{cm}$ and the final length after contraction is $1.6 \, \text{cm}$. The displacement is the difference between the initial and final lengths. So, we have: \[ \Delta L = L_{\text{initial}} - L_{\text{final}} = Show more…

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A typical muscle fiber is $2.0 \mathrm{cm}$ long and has a cross-section area of $3.1 \times 10^{-9} \mathrm{m}^{2} .$ When the muscle fiber is stimulated, it pulls with a force of $1.2 \mathrm{mN}$. What is the work done by the muscle fiber as it contracts to a length of $1.6 \mathrm{cm} ?$

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Key Concepts

Force

Force is a vector quantity that represents a push or pull on an object, causing it to undergo a change in motion. In the context of calculating work, knowing the magnitude of the force and its direction relative to movement is essential.

Unit Conversion

Unit conversion is the process of converting measurements from one set of units to another to maintain consistency. In calculations involving work, converting units such as centimeters to meters and millinewtons to newtons is crucial to ensure the accuracy of the result.

Work

Work in physics is the energy transferred by a force acting over a distance in the direction of the force. It is calculated as the product of the applied force and the displacement through which the force is applied, and it is measured in Joules.

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