Christian Lawson-Perfect
Member of the e-learning unit in Newcastle University's School of Mathematics and Statistics.
Lead developer of Numbas.
I'm happy to answer any questions - email me.
Christian's activity
Christian Lawson-Perfect on Particle in equilibrium on an incline. 9 years, 4 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect commented on Particle in equilibrium on an incline. 9 years, 4 months ago
Remade the diagrams.
Christian Lawson-Perfect on Find distance travelled and reaction force given mass and force 9 years, 4 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect commented on Find distance travelled and reaction force given mass and force 9 years, 4 months ago
Changed the title and improved some wording. Added adaptive marking on part b, to use the answer to part a.
Christian Lawson-Perfect on Find weight of particle under gravity, and acceleration given force 9 years, 4 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect on Acceleration and weight: apply $F=ma$ and $W=mg$ 9 years, 4 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect commented on Acceleration and weight: apply $F=ma$ and $W=mg$ 9 years, 4 months ago
Changed the title and clarified the prompt for part e.
Christian Lawson-Perfect on Find initial speeds of particles given speeds after collision and impulse 9 years, 4 months ago
Gave some feedback: Ready to use
Christian Lawson-Perfect commented on Find initial speeds of particles given speeds after collision and impulse 9 years, 4 months ago
Clarified some wording and changed the title. I still don't find the advice very clear - lots of opportunity to lose track of signs.
Fixing a positive direction and using "left" and "right" would help.
Christian Lawson-Perfect on Impulse transmitted through a string between two objects 9 years, 4 months ago
Gave some feedback: Ready to use