Recent content by learn2physics

Yes the pivot is at 2.5 mark of the ladder from the left. Sorry my picture wasn't clear. Is my understanding correct? Thank you!

Thank you very much for your help! So my mistake was not recognising the vertical component of T2. Thank you!

Oh my! Sorry! What a silly mistake I made. It should be tan(30) = F/5 (opposite/adjacent) F = 5tan(30) F = 2.89 (3 sig. fig.) Therefore the force F is 28.9N Am I understanding this correctly? Thank you!

OH! If I am understanding it correctly, The vertical component of T2 is 50N Therefore force F is at the base. http://i.imgur.com/NCCD8Hy.jpg Am I right to say: Using a scale diagram, 1cm representing 10N sin(30) = F/5 F = 5sin(30) F= 2.5cm Therefore, the reading of force F...

OH! Am I right to say this: If the timebase setting was 5 seconds per division and the terminal is moved quickly, I will see a trace that was lower initially and then a gradual slope upwards (positive gradient) then a constant horizontal line at its new higher trace reading. Am I...

I have look through my textbook and for this question I am having weird answers. I believd I have not fully understand yet. I have tried to identify all the forces. http://i.imgur.com/HexCRVQ.jpg Does this make sense? I made a bad calculation mistake on previous attempt From what I...

Hi. Yes. It is exactly as worded. I am sorry I forgot to typed the y-gain and time base into the question. I edited it on the front post now. The y-gain is 2V per division, time base setting is 1.0ms per division. I want to know if my understanding is correct. If I move the potential...

Homework Statement This is a theoretical question that I do not quite fully understand. " An object moving up a 6m ramp to a height of 2m v.s vertically moving an object up 2m." Someone tell me the work done is the same for both scenario. How are they the same? Surely kinetic energy is...

Homework Statement The figure shows 2 terminals M and N of a potential divider connected to a 6V battery. The circuit is connected to a Cathode-ray Oscillator. http://i.imgur.com/zeV2e3j.jpg The y-gain is 2V per division and timebase setting is 1.0ms per division. (a) Describe in details...

Homework Statement A 5.0kg mass is suspended from the ceiling. A horizontal force F is applied to hold the string in position as shown http://i.imgur.com/ZdR72ff.jpg Determine the reading of F on the spring balance by using a scale diagram Homework Equations None The Attempt at...

Homework Statement A ladder weighing 200N is being held by a man. The man shoulder acts as a pivot. His arm is pushing an upward force F. http://i.imgur.com/dMrcRtK.jpg Where could a weight of 150N be hang upon, so that force F do not need to counteract the weight of the ladder...

Hi everyone. I am self studying for my GCE for the past 6 months now. I have been doing revision for a long time and did some question papers. I have a few problems and hope the people here can guide me. Thank you Problem 1. Homework Statement A 5.0kg mass is suspended from the ceiling. A...