Physics p34 05 june 2014

[dumb human]

Electricity is not coming i guess

How did you do that
the person moving down....???

 

[unkidd]

No....It will be around The RANGE =)

so can you please tell me max marks i can loose . someone said 7-8 because k and theta were associated with that value

 

[sheetal.gera]

to convert cm to mm, we had to multiply the answer with 10, but i did with 100. so many marks will i loose?? or i got my whole question wrong??

 

[dason thomas]

for the oscillation question were u supposed to take the time for 1 spin or 5 ???

 

[happyperson]

for the oscillation question were u supposed to take the time for 1 spin or 5 ???

5 cycles. It was mentioned, t is for 5 so we had to take t^2 later for 5 oscillations and not for 1.

 

[happyperson]

I need to know whether the table is to be drawn with pencil completely or writing part is to be done in pen? Please answer this.

 

[Alihayatlak]

drawn with pencil written in pen as in all practicalss

 

[dason thomas]

5 cycles. It was mentioned, t is for 5 so we had to take t^2 later for 5 oscillations and not for 1.

omg thanks, thought i lost marks

 

[Saahil Parikh]

Ha went great. What was the percentage uncertainty in the second one? I got like 37% :O

And thanks to the person who broke the news that we'll be having Inclined Planes. You probably were the reason I got those 8 marks at the end. Cheers.

 

[happyperson]

Ha went great. What was the percentage uncertainty in the second one? I got like 37% :O

And thanks to the person who broke the news that we'll be having Inclined Planes. You probably were the reason I got those 8 marks at the end. Cheers.

My uncertainty was o.4 something :/ The smallest division was 0.5 mm i guess.

 

[MariamMalik]

my uncertainty was 3.92%. didn't we have to do this :- least division from ruler/value x 100?

 

[Asad Moosvi]

my uncertainty was 3.92%. didn't we have to do this :- least division from ruler/value x 100?

I had an uncertainty of 3% and yeah, least division. So 1 mm is the least division.

 

[dumb human]

I had an uncertainty of 3% and yeah, least division. So 1 mm is the least division.

my Uncertainty was 2............

 

[Abdul Basit]

In my centre most people took 2 mm as certainty. One was least divisiom while the other 1 was uncertainty in the mid point of sphere. Mine was 10.5%.

What were the limitations and improvements?

 

[dumb human]

In my centre most people took 2 mm as certainty. One was least divisiom while the other 1 was uncertainty in the mid point of sphere. Mine was 10.5%.

What were the limitations and improvements?

I made my own limitations and improvements

 

[10apples]

what angles did you all take? for theta?

 

[Snowysangel]

In my centre most people took 2 mm as certainty. One was least divisiom while the other 1 was uncertainty in the mid point of sphere. Mine was 10.5%.

What were the limitations and improvements?

I got exactly 10%. For limitations I wrote thst 1)some kinetic ebergy is lost as the ramp is rough in some places 2)force was applied to the sphere 3)it was difficult to determine the center of the ball while measuring x
For improvement, 1)uses larger distances 2) use a set square to measure the distance from the edge of the ramp to the zero mark on the rule and add it to the reading if 'L' 3)use an electromagnet
I'm not sure they're all correct tho

 

[Abdul Basit]

I got exactly 10%. For limitations I wrote thst 1)some kinetic ebergy is lost as the ramp is rough in some places 2)force was applied to the sphere 3)it was difficult to determine the center of the ball while measuring x
For improvement, 1)uses larger distances 2) use a set square to measure the distance from the edge of the ramp to the zero mark on the rule and add it to the reading if 'L' 3)use an electromagnet
I'm not sure they're all correct tho

I dont think that electromagnet method is correct here as they already gave us 2 small rods which could be placed in front of the sphere and then removed so that the sphere slides with no force applied.

 

[Snowysangel]

I dont think that electromagnet method is correct here as they already gave us 2 small rods which could be placed in front of the sphere and then removed so that the sphere slides with no force applied.

But that wasnt written in the instructions.. You just suggested one if a gazillion ways if employing the rods. The questions asked us to state the limitations of the method that they wrote down :/ I meant my other points btw...open your mind

 

[Abdul Basit]

Hmmmmm. Lets hope for the best. Well I wrote one reason that it was not accurate to measure radius using vernier callipers as the sphere was not fitting properly in the jaws (slipping). For improvement I wrote micrometer screw guage as it can measure up to 0.01mm and in this experiment mm is being used so more accurate.