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Grymoedd Forces

Sut mae grymoedd anghytbwys a chytbwys yn effeithio mudiant
by

Rhodri Llwyd

on 19 February 2012

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Transcript of Grymoedd Forces

GRYMOEDD
FORCES Cytbwys
Balanced Nid ydynt yn symud
They aren't moving Mae'r grym yma
This force yr un peth a hwn
is the same as this one Mae'r roced yn cyflymu
The rocket is accelerating Mae'r grym i fyny yn fwy na'r grym i lawr
The upward force is bigger than the downward force GRYM ANGHYTBWYS
UNBALANCED FORCES Mae grym cytbwys yn golygu dim newid mewn mudiant
Balanced forces cause no change in motion

Mae grym anghytbwys yn achosi cyflymiad
Unbalanced forces result in accelration Mae rhywbeth sydd yn symud ar fuanedd cyson (dim newid mewn mudiant) dan ddylanwad grymoedd cytbwys
An object moving at constant speed is under the influence of balanced forces Mae'r grym ymlaen gan ei gorff
The forward force from his body Yr un maint a grym ffrithiant (gwrthiant aer) yn erbyn ei gorff.
Is the same as the frictional force (air resistance) against his body. Buanedd Uchaf
Top Speed Mewn cwestiwn arholiad gallai y grymoedd yma newid
In an exam question these forces could change

Y cwestiwn mwyaf poblogaidd yw plymiwr awyr
The most popular question is a skydiver F=ma GRYM
FORCE Hynny ydi cyfanswm y grymoedd
That is the total force Mas y gwrthrych
The mass of the object Cyflymiad y gwrthrych
Acceleration of the object
Full transcript