Caption: Calculating friction forces. Animation of a mass (red block) on a slope, with diagrams illustrating how the friction force that keeps the block stationary is calculated. The angle of the slope is labelled theta. Arrows label the forces in balance here. The weight or gravitational force (blue arrow) is a downwards force from the centre of mass. The reaction force (orange arrow) acts outwards and perpendicular to the slope. The friction force (red arrow) acts parallel to the slope. This can be rearranged as a right-angled triangle (end of clip) and the mathematical principles of trigonometry applied to calculate the values of the reaction and friction forces for a known weight. The reaction force is the weight multiplied by the cosine of the angle theta. The friction force is the weight multiplied by the sine of the angle theta.

Release details: Model release not required. Property release not required.

Keywords: angle, animated, animation, balance, balanced, calculation, calculations, cos, cosine, equation, equations, force, forces, friction, frictional, graphic, gravitational, gravity, mathematical, mathematics, mechanics, no-one, nobody, parellel, perpendicular, physical, physics, reaction, right angle, right angled, right-angled triangle, sin, sine, slope, theta, trigonometric, trigonometry, tumble view, weight

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.

Calculating friction forces, animation

K004/6485 Rights Managed

Downloadable master

Duration: 00:00:17.17

Frame size: 1920x1080

Frame rate: 24

Audio: No

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 141.0M


Capture format: QuickTime Animation

Codec: Photo - JPEG

Please contact Science Photo Library if you require the original, or other formats.


Save watermarked comp

Request un-watermarked file

Price clip Pricing

Please login to use the price calculator