Qualification > Sciences
Physics help!
@d!_†oX!©:
I am not sure either...there are so many things in my mind right now, each leading to different answer..
1) It can be A:
Moment of a force = force X perpendicular distance
Moment of a force = 2sin50 X 0.15 = 0.23 Nm
2) It can be C:
Two forces acting simultaneously, thus two moments = 2 X 0.23 = 0.46 Nm
3) It can be D:
My book (International A/AS level Physics - CIE endorsed) says -
The torque of a couple is the product of one of the forces and the perpendicular distance between the forces Therefore, according to this, Torque = 2 X 0.15 = 0.60 Nm
Fortunately, I don't have any idea about B, or else I'd be dead =.=
Someone please help me!!
nid404:
--- Quote from: @d!_†oX!© on August 24, 2010, 05:23:45 pm ---can someone help me in this question?
--- End quote ---
Force X perpendicular distance between the two forces
2sin50 X 0.3= 0.46Nm
C
@d!_†oX!©:
Oh I just realized, my 1) point is matching the 3) cause as the book says it is the perpendicular answer, so in that way 0.23 should be right.
Engraved, any say about my answers?
Ahana, the book says something else :/ it says only one of the forces..
Vin:
--- Quote from: @d!_†oX!© on August 24, 2010, 05:43:06 pm ---Oh I just realized, my 1) point is matching the 3) cause as the book says it is the perpendicular answer, so in that way 0.23 should be right.
Engraved, any say about my answers?
Ahana, the book says something else :/ it says only one of the forces..
--- End quote ---
I saw the book too. Pg. 107. But a different kind of an example is given. What does the markscheme say?
nid404:
--- Quote from: @d!_†oX!© on August 24, 2010, 05:43:06 pm ---Oh I just realized, my 1) point is matching the 3) cause as the book says it is the perpendicular answer, so in that way 0.23 should be right.
Engraved, any say about my answers?
Ahana, the book says something else :/ it says only one of the forces..
--- End quote ---
In a couple the magnitude of the force is the same.
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