Question

1. A box of mass 11[kg] is being pushed up a frictionless inclined plane by a force of 700[N]. The slope of the plane is 37 degrees. The box is pushed at 37 degrees – so the push is in exactly the same direction as the direction of the plane. Assume that the box was initially at rest.

Suggestion: Draw a picture of this situation

1. Draw a free body diagram for the box

b. Draw a tilted free body diagram such that the 700[N] push force is along the x direction (positive or negative, depending on your drawing).

c. Fill the table:

Forces X у Fnet

4. What is the velocity of the box after it moved 5 [meters] up the hill.

Answer 1

-X Лху imgesine bu for bu +Х 1 - у

F = 700N (-sê m = 11kg o = 37° mg cos 37° = 1189.8) X Cod 37 = 86.18 (-} ] & mg sin 37° = 64.94 (+²) (+32) here; N= my cohe (+å) forces Х у - 700 86.18 64.94 Fnet |-635.06 86.18 As ; Fret 635.06 (-2) =) 635.og = a = 57.73 m/ sec? Now, dv It doc du dx dt sada v du La : svar 57.73 x 5 -) v ~ 94.03 m/sec 2

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