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Biology; Chemistry; Physics: Post your doubts here!

asd

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When two springs are attached, the extensions are halved because the load divides. Imagine just one spring attached; It's length would be 2x (Weight of the load doesn't divide now - only one spring is present). So for 2 springs it will be 4x!
ashiqbal
 
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also can someone explain the MCQ 9?
in fisrt picture, the load is supported by 2 springs which means that half of the load acts on each spring.
in 2nd picture, load acts on each spring and produces twice the extension in pic 1. which means 2x on each spring
so, 2x + 2x = 4x, option D
 

asd

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Question for you guys, designed by myself :D
A bicycle moves round a turn with a constant speed. What two statements from the following explain the force acting on the bicycle and its direction of acceleration?
1 Since the speed is constant, there is no force acting on the cycle.
2 Since the speed is constant, there is no acceleration.
3 A force acts on the cycle towards the center of the round turn.
4 Acceleration acts towards the center of the round turn.
5 Acceleration and force both act perpendicularly to each other with acceleration being tangent to the round turn and force towards the center.

A) 1 and 2
B) 3 and 5
C) 2 and 3
D) 3 and 4
 

asd

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6) ant-clockwise moment = clockwise moment --> F*(0.75+0.75) = 150*0.75 , OPTION A
8) uptil 10 the extension is uniform, but after ten its not so OPTION C
11) use E=mc^2 , OPTION D
20) v=f*lamda --> 1.5 , then use v=distance/time , OPTION C
and guys E=mc^2 is no longer in our syllabus !
 
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6) ant-clockwise moment = clockwise moment --> F*(0.75+0.75) = 150*0.75 , OPTION A
8) uptil 10 the extension is uniform, but after ten its not so OPTION C
11) use E=mc^2 , OPTION D
20) v=f*lamda --> 1.5 , then use v=distance/time , OPTION C
thanks :)
 

asd

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:mad:
Umm any more guesses?? Mayedah ashiqbal khizer shahab Spidey21
Question for you guys, designed by myself :D
A bicycle moves round a turn with a constant speed. What two statements from the following explain the force acting on the bicycle and its direction of acceleration?
1 Since the speed is constant, there is no force acting on the cycle.
2 Since the speed is constant, there is no acceleration.
3 A force acts on the cycle towards the center of the round turn.
4 Acceleration acts towards the center of the round turn.
5 Acceleration and force both act perpendicularly to each other with acceleration being tangent to the round turn and force towards the center.

A) 1 and 2
B) 3 and 5
C) 2 and 3
D) 3 and 4
 

asd

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Should I tell the answer? Well i actually wanted ashiqbal to answer it too..wanted to see what he could come up with..
 
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Question for you guys, designed by myself :D
A bicycle moves round a turn with a constant speed. What two statements from the following explain the force acting on the bicycle and its direction of acceleration?
1 Since the speed is constant, there is no force acting on the cycle.
2 Since the speed is constant, there is no acceleration.
3 A force acts on the cycle towards the center of the round turn.
4 Acceleration acts towards the center of the round turn.
5 Acceleration and force both act perpendicularly to each other with acceleration being tangent to the round turn and force towards the center.

A) 1 and 2
B) 3 and 5
C) 2 and 3
D) 3 and 4
D
 
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