At an instant when a 4.0-kg object has an acceleration equal to m/s², one of the two forces acting on the object is known to be N. Determine the magnitude of the other force acting on the object. A) 2.0 N B) 13 N C) 18 N D) 1.7 N E) 20 N

Question

Quizplus · Accepted Answer

We can use Newton's second law of motion, which states that the sum of all forces acting on an object is equal to its mass multiplied by its acceleration:

ΣF = ma

Where ΣF is the net force acting on the object, m is its mass, and a is its acceleration.

We can rearrange this equation to solve for the unknown force:

F2 = ma - F1

Where F2 is the unknown force and F1 is the known force. Substituting the given values, we get:

F2 = (4.0 kg)(11 m/s²) - 11 N
F2 = 44 N - 11 N
F2 = 33 N

Therefore, the magnitude of the other force acting on the object is 33 N, which corresponds to choice B.

At an Instant When a 4