Lecture421.pdf - 1-SI units are kg to change-a vector quantity 2 where is the net force m is the mass of the object is the acceleration of the object 2

# Lecture421.pdf - 1-SI units are kg to change-a vector...

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This preview shows page 1 out of 4 pages. Unformatted text preview: 1 : : --SI units are kg : : : to change -a vector quantity 2 where: is the net force m is the mass of the object is the acceleration of the object 2 2 2 2 Normal Force N -always a pulling force (so direction of force on an object is 3 ex: 4.57 from textbook o The mover pulls on a rope attached to the box to pull it up the incline (figure below). If the rope makes an angle of 40.0 o with F to exert to move the box up the ramp? F N F 15 mg (= weight) Solving the horizontal equation for N and then substituting into the vertical equation gives: and then plugging in numbers for the trig functions and m and g gives us: F = 56.029858N --&gt; 56.0N 4 ...
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