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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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BuyFindarrow_forward

College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

A tension force of 175 N inclined at 20.0° above the horizontal is used to pull a 40.0-kg packing crate a distance of 6.00 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface.

(a)

To determine
The Work done by the tension force.

Explanation

Given Info:

The tension force is 175N .

The mass of the crate is 40.0kg .

The inclination of tension force with the horizontal is 20.0° .

The distance that the crate is pulled on the surface is 6.0m .

Formula to calculate the work done by the tension force is,

WF=(Fcosθ)d       (I)

  • θ is the angle between the force applied and the displacement vector
  • F is the force applied
  • d is the displacement vector

Substitute 175N for F, 20

(b)

To determine
The coefficient of kinetic friction between the crate and the surface.

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