forcediagrams

# forcediagrams - If you ask yourself these questions each...

This preview shows pages 1–2. Sign up to view the full content.

A. Forces 1. Weight (force due to gravity – always points directly downwards) 2. Tension (force due to a string – always points away from object) 3. Normal (force on the object due to a surface – always points from the surface towards the object) 4. Friction (always points opposite the direction of motion or potential motion) 5. Push/Pull B. Draw Forces: Ask the following questions each time: 1. Is their gravity? (always yes unless otherwise stated) 2. Are there any ropes/strings attached? 3. Is it on a surface? 4. Is there friction? 5. Is anyone/anything pushing or pulling on the object?

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: If you ask yourself these questions each time, you will not forget a force. C. Decide what orientation your x- y- axis should be. Example: Or (ramp) D. COMPONENTS Break any force that is not along an axis into components along the axis E. REDRAW picture All forces drawn are either along the x- or y-axis Example: A sled (mass = m) is pulled up a hill (coefficient of friction = 0.2) with a force of F. " F x = ma x Fcos α – mgsin θ – f = ma x " F y = ma y Fsin α + N –mgcos θ = 0 θ α α θ mgcos θ mgsin θ N Fsin α Fcos α f F...
View Full Document

{[ snackBarMessage ]}

### Page1 / 2

forcediagrams - If you ask yourself these questions each...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online