1. The horizontal component of the worker's push is 21.2 N.
2. Net force equation for the horizontal forces on the box: Fnet = 25cos(20°) - Ff = 25cos(20°) = 21.2 N.
3. Acceleration of the box: a = Fnet/m = 21.2 N/7 kg = 3 m/s2.
4. Normal force on the box: Fnormal = Fnet/sin(20°) = 25/sin(20°) = 28.3 N.
a worker pushes a 7kg shipping box along a roller track. assume friction is small enough to be ignored because of the rollers. the worker's push is 25 N directed down and to the right at an angle of 20 degrees.
1. determine the horizontal component of the worker's push
2. write a net force equation for the horizontal forces on the box
3. determine the acceleration of the box
4. determine the normal force on the box
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