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[MLT-2] or [Mass]*[Length]*[Time]-2
kg*m/s2
This is the units of force in SI. It is not the dimensions. The dimensions are below. -------
Mass * Length * Time-2
Thus, "[M][L][T -2]" are the dimensions of force.
See reference below or more information.
Gray, Costanzo, & Plesha, Engineering Mechanics, Dynamics,McGraw-Hill, 2009, ISBN: 0077-27554-3
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What is the dimension of stress?
it is the dimension of force over dimension of area. stress = force/area Why, that's just pressure !
What is dimension of power?
The dimension of power is (energy / time)= (force x distance) / time= (mass x distance / time2) x distance / time= mass x distance2 / time3= ML2T-3
What is the dimension of strain?
it has no dimension
Weight x distance divided by time?
Weight has same dimension and unit as force. Distance has same dimension and unit as displacement. So weight * distance has same dimension and unit as force * displacement. Force * displacement is work done by the force. Work divided by time to do the work is Power. So weight * distance divided by time also has same dimension and unit as Power although it is not power. S.I. unit of weight * distance divided by time is Newton *meter/second or Nms-1 (in abbr.) It's dimensions are 1, 2, -3 in mass, length and time respectively. Note that given quantity's unit can't be joule/second or watt because weight * distance is not work done, only unit and dimension are same1 . 1. Two physical quantities may have same dimensions and units but that doesn't mean they refer to same quantity.
What is the dimension of moment of force?
The SI unit is the newton-metre, the imperial the foot-pound. For more information please see the wikipedia article.
