Hi there! Mine was good how was yours? Do you remember any answers? Like do you remember the answer to that upwards force acting on the balloon in question 14?

Original post by OreoLover1

How was your exam?

What did you get on the force on constantan wire question

(edited 1 year ago)

Reply 44

no one:D

7

What was the question could you elaborate on it? I can’t remember rn><

Original post by 94941

What did you get on the force on constantan wire question

Reply 45

no one:D

7

Also what was the answer to why kinetic energy wouldn’t be conserved after collision?

And for the centre of G one, what was the answer to the first part of the question where it was asked why’s moment of p/R is greater than R/p?? I mentioned components like an idiot but it was supposed to be principle of moment right?

For the engine question, was it stated that the train is in constant speed? I just drew 2 arrows- thrust and drag, so how many marks do i get?

And if I wrote that resultant force is the driving force, is that incorrect??:’(

Reply 46

no one:D

7

Original post by 94941

Kinetic energy= energy transferred... not power i believe

Hi

would you mind stating the question in details? I can’t seem to remember what the question was

Reply 47

94941

4

Original post by no one:D

Also what was the answer to why kinetic energy wouldn’t be conserved after collision?

And for the centre of G one, what was the answer to the first part of the question where it was asked why’s moment of p/R is greater than R/p?? I mentioned components like an idiot but it was supposed to be principle of moment right?

For the engine question, was it stated that the train is in constant speed? I just drew 2 arrows- thrust and drag, so how many marks do i get?

And if I wrote that resultant force is the driving force, is that incorrect??:’(

Original post by no one:D

Hi

would you mind stating the question in details? I can’t seem to remember what the question was

It was the one we had to find acceleration from resultant force

Reply 48

94941

4

Original post by no one:D

Also what was the answer to why kinetic energy wouldn’t be conserved after collision?

And for the centre of G one, what was the answer to the first part of the question where it was asked why’s moment of p/R is greater than R/p?? I mentioned components like an idiot but it was supposed to be principle of moment right?

For the engine question, was it stated that the train is in constant speed? I just drew 2 arrows- thrust and drag, so how many marks do i get?

And if I wrote that resultant force is the driving force, is that incorrect??:’(

The forces one was principle of moments
I dont rememeber the the drawing one

Reply 49

Ashan6886

OP

9

Original post by no one:D

Also what was the answer to why kinetic energy wouldn’t be conserved after collision?

And for the centre of G one, what was the answer to the first part of the question where it was asked why’s moment of p/R is greater than R/p?? I mentioned components like an idiot but it was supposed to be principle of moment right?

For the engine question, was it stated that the train is in constant speed? I just drew 2 arrows- thrust and drag, so how many marks do i get?

And if I wrote that resultant force is the driving force, is that incorrect??:’(

for the moments question, it was that since moments about the pivot (anticlockwise and clockwise) were the same, and that P had a greater distance to the pivot than R, therefore P would be less than R.

Reply 50

Ashan6886

OP

9

Original post by no one:D

Hi

would you mind stating the question in details? I can’t seem to remember what the question was

The question was about finding the power output of the car. Given we could calculate its Kinetic energy during motion, it meant that KE was bascially the power output because there was no other way to find power considering P = E/t and we didn't have time.

Reply 51

Ashan6886

OP

9

Does anyone remember the answer to the resultant force on the Balloon in question 13 or 14? I used the equation of Resultant Force = Upthrust - Weight and got an answer of. 0.498N

Reply 52

Ashan6886

OP

9

For the breaking stress question, does anyone know how was the question attempted correctly? I just realized that I calculated the Young Modulus and gave an incorrect answer lol.

Reply 53

94941

4

Original post by Ashan6886

The question was about finding the power output of the car. Given we could calculate its Kinetic energy during motion, it meant that KE was bascially the power output because there was no other way to find power considering P = E/t and we didn't have time.

Power is also equal to fv

Reply 54

Ashan6886

OP

9

Original post by 94941

Power is also equal to fv

can you explain this?

Reply 55

Ashan6886

OP

9

Original post by 94941

Power is also equal to fv

Yea you are right. Just got your point. Do you remember answers to any of the theory questions? Like the one which asked why will the balloon keep moving upwards? And what about the resultant force you got for the balloon? Was it 0.498N?