Qualification > Sciences
ALL CIE PHYSICS DOUBTS HERE !!!
missbeautiful789:
The turning effect of a Force is given by
Force x Perpendicular distance from the pivot
resultant torque= sum of clokwise moment - sum of anti-clockwise moments
Clokwise moments:
the 20N has a clockwise moment
20 x perp distance
20X3
clockwise moment=60 Nm
Anti-clockwise moments:
the 10N and 5N have a anti-clockwise moment, so
10N x its perp distance from pivot + 5N x its per distance from pivot
10X2 + 5X2
anticlockwise moment = 30 Nm
so resulant torque = 60 - 30
= 30 Nm
Deadly_king:
--- Quote from: missbeautiful789 on October 23, 2010, 12:55:33 pm ---The turning effect of a Force is given by
Force x Perpendicular distance from the pivot
resultant torque= sum of clokwise moment - sum of anti-clockwise moments
Clokwise moments:
the 20N has a clockwise moment
20 x perp distance
20X3
clockwise moment=60 Nm
Anti-clockwise moments:
the 10N and 5N have a anti-clockwise moment, so
10N x its perp distance from pivot + 5N x its per distance from pivot
10X2 + 5X2
anticlockwise moment = 30 Nm
so resulant torque = 60 - 30
= 30 Nm
--- End quote ---
Good job dear :)
Very informative explanation..........much appreciated :D
+rep after i spread the love ;)
TJ-56:
Thanx alot for the explanation, much clearer now
can anyone help with this one
answers A
pls explain
SpongeBob:
Total resistance= 7.5 ohms
Current flowing in the circuit= 2/7.5 = 4/15 A
Current flowing in each loop= 2/15
Voltage across each resistor= 5 X 2/15= 2/3 V
Across X (2 resistors) V= 4/3 V
Across Y (1 resistor) V= 2/3 V
Potential difference= Potential across X - Potential across Y= 4/3 - 2/3 = 2/3 V
TJ-56:
Thank you Spongebob, much more clear now + rep ( i have to wait for around an hour though)
Got another question
The answer is C pls explain i tried everything, couldnt get to C
thanx in advance
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