Physics, 02.11.2019 04:31 dtrdtrdtrdtrdrt3415
In order to slide a heavy desk across the floor at constant speed in a straight line, you have to exert a horizontal force of 400 newtons. compare the 400-newton horizontal pushing force f to the frictional force f between the desk and the ground.
1. f < f; the frictional force is greater than the pushing force since it is such a heavy desk.
2. f = f from newton’s first law.
3. f > f; the frictional force is always less than any other force acting on the object.
4. it depends on the direction the desk moves. 5. f = f from newton’s third law.
Answers: 1
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