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  1. Thought blocker

    Physics: Post your doubts here!

    5) x is 0.44. Add uncertainties. U get 0.03. (0.03/0.44)*100 = 7% 11) The tension in the rope needs to balance out the weight of the student acting downwards, so since the total tension needs to be opposite and equal to the weight, Let tension in rope on left side be T1 and the tension on rope...
  2. Thought blocker

    Physics: Post your doubts here!

    28) Weight acts downwards so since it's in equilibrium the electric force has to act upwards. Since the plate up is positive and attracting the drop, that drop has to have a negative charge.
  3. Thought blocker

    I am repeating my As level.

    9) force=rate of change of momentum 60=-(30v-30*3)/0.5 (i put a minus sign before the bracket because the force is a retarding force, so the acceleration will be negative) v= 2 13) assuming it is projected with velocity v, so the initial KE, E= (mv^2)/2 at the highest point, the vertical...
  4. Thought blocker

    Physics: Post your doubts here!

    14,15,21, and 31!! 14) Moment = force times distance from the pivote ----------> F * 2R happens in B 15) ( 10cos30 + 10cos30 ) - 10 = 7.3 21) 17.5 *10^6 = 830*g*h + 1000*g*h 17.5 * 10^6 = 8142.3x + 9810(2000 - x) 17.5 *10^6 = 8142.3x + 19 620 000 - 9810x -2 120 000= -1667.7x 1271.2 = x ~ 1270...
  5. Thought blocker

    Physics: Post your doubts here!

    14) (0.35*3*9.81)+(0.1*1.4*9.81=(0.15*6*9.81)+ans ans=2.8Nm 16) 80*28/100=112/5 112/5 =potential energy 112/5=mgh 112/5=(o.12)(9.81)h P.Sonly 120 g taken into account as only the arrow has a movement. 17) mgsinteta*speed=40% of total power mgsinteta=force force*velocity=power (total...
  6. Thought blocker

    Physics: Post your doubts here!

    20) Take the leftmost column of liquid. There is a rule in fluid-statics that "the pressure in a sample of liquid is the same at any vertical height, as long as the fluid at that height is part of the whole." What that says is that in any single sample of liquid, the pressure at any height is...
  7. Thought blocker

    Physics: Post your doubts here!

    At point S and P both have highest acceleration :) and Q wont be zero all the time as it is oscillating.
  8. Thought blocker

    Suggestions accepted. *Only if ghost likes it* :P

    Suggestions accepted. *Only if ghost likes it* :P
  9. Thought blocker

    As physics p1 MCQS YEARLY ONLY.

    -Phew- Any doubts left O.o ?
  10. Thought blocker

    iKR :p

    iKR :p
  11. Thought blocker

    Physics: Post your doubts here!

    Which question. ._. ?
  12. Thought blocker

    Physics: Post your doubts here!

    Its displacement graph, so A is rejected. And Q is not always zero, coz its oscillating. D coz Q and P has max amplitude....
  13. Thought blocker

    Physics: Post your doubts here!

    Good night, I wont come tomorrow, if possible, I'd come.. :)
  14. Thought blocker

    Physics: Post your doubts here!

    https://www.xtremepapers.com/community/threads/physics-post-your-doubts-here.9860/page-521#post-819058 <--- here.
  15. Thought blocker

    Physics: Post your doubts here!

  16. Thought blocker

    Physics: Post your doubts here!

    Okay so this problem is like parallel and series circuit. just imagine extension as resistors, and if you want overall k then find inverse of overall x. or otherwise the otherway if parallel then k would all add up for overall k. You do it yourself now and see if you got correct
  17. Thought blocker

    Physics: Post your doubts here!

  18. Thought blocker

    [Game] | MALE Vs. FEMALE

    2880
  19. Thought blocker

    [Game] | MALE Vs. FEMALE

    2900
  20. Thought blocker

    [Game] | MALE Vs. FEMALE

    2890
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