Calculating resistance force parallel to a slope

Click For Summary
SUMMARY

The discussion focuses on calculating the resistance force acting on an 80kg skier skiing down a 5-degree slope at constant velocity. Since the skier is moving at constant velocity, the net force acting on him is zero, meaning the resistance force is equal to the component of gravitational force parallel to the slope. The gravitational force can be calculated using the formula F = mg, where m is mass and g is the acceleration due to gravity (9.81 m/s²). The resistance force can be derived from the equation F_resistance = mg * sin(θ), where θ is the slope angle.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Basic knowledge of trigonometry, specifically sine function
  • Familiarity with gravitational force calculations
  • Concept of constant velocity in physics
NEXT STEPS
  • Study the application of Newton's laws in real-world scenarios
  • Learn about vector decomposition in physics
  • Explore the concept of friction and its role in resistance forces
  • Investigate the effects of different slope angles on resistance forces
USEFUL FOR

Physics students, educators, and anyone interested in understanding forces acting on objects in motion, particularly in the context of skiing or similar sports.

laurence_1
Messages
1
Reaction score
0
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?
 
Physics news on Phys.org
Remember that he is moving at a *constant* velocity. When is velocity constant?
 

Similar threads

Relation between Friction, Velocity, and Acceleration
  • · Replies 16 ·
Replies
16
Views
2K
Electrical Circuits - Parallel vs. Series
  • · Replies 14 ·
Replies
14
Views
2K
What Are the Gravitational and Normal Forces on a Skier on a Slope?
  • · Replies 4 ·
Replies
4
Views
2K
Using Momentum, KE and PE to solve this skier velocity problem
  • · Replies 13 ·
Replies
13
Views
3K
Finding the acceleration of a block on an inclined plane with friction
  • · Replies 2 ·
Replies
2
Views
887
Forces and Free-Body Diagrams in Real-World Scenarios
  • · Replies 5 ·
Replies
5
Views
4K
How to calculate the kinematics of an object pushed up an inclinex plane?
  • · Replies 7 ·
Replies
7
Views
2K
Mass of an Object Moving Down a Slope.
  • · Replies 6 ·
Replies
6
Views
3K
Forces on skier: slope friction and wind
  • · Replies 10 ·
Replies
10
Views
6K
Finding max velocity for a kart on a circular, banked track
  • · Replies 2 ·
Replies
2
Views
2K