There are four forces acting on the box: a spring pulls with a force of 40 n. the force of gravity acts downward; and the force of the table is pushing up on the box. what must be true of the frictional force if the box moves across the table?
a) it is equal to the effort force.
b) it is less than the effort force.
c) it is more than the effort force.
d) it is equal to the force of gravity.
Answers: 1
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There are four forces acting on the box: a spring pulls with a force of 40 n. the force of gravity...
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