Calculating resistance force parallel to a slope

Thread starter laurence_1
Start date Mar 20, 2012
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Force Parallel Resistance Slope

AI Thread Summary

To calculate the resistance force parallel to a slope for an 80kg skier skiing down a 5-degree slope at constant velocity, it is essential to recognize that constant velocity indicates that the net force acting on the skier is zero. This means the gravitational force component parallel to the slope must be balanced by the resistance force. The gravitational force can be calculated using the formula F = mg sin(θ), where m is the mass, g is the acceleration due to gravity, and θ is the slope angle. Since the skier is not accelerating, the resistance force equals this gravitational force component. Understanding these principles allows for the calculation of the resistance force without additional information.

Mar 20, 2012

laurence_1

1. An 80kg skier is skiing down a 5 degree slope at constant velocity. find

a) the resistance force parallel to the slope.

this should be a really easy question but i just don't know where to start. i have drawn out the vectors for parallel force and perpendicular force but do i not need more information to do the calculations?

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Mar 20, 2012

clamtrox

Remember that he is moving at a *constant* velocity. When is velocity constant?

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