Question

net force worksheet
in the example with a man pushing the box along the floor, what are the four forces that must be drawn into the fbd?
gravity, normal, applied, friction
gravity, acceleration, applied, friction
gravity, normal, applied, tension
normal, applied, friction, wind

Explanation:

Step1: Analyze each option

• Option 1: Gravity acts downward, normal force acts upward (perpendicular to the floor), applied force is the push by the man, and friction acts opposite to the direction of motion (if the box is moving or has a tendency to move). These are all valid forces in this scenario.
• Option 2: Acceleration is not a force. Force causes acceleration (from \(F = ma\)), so this option is incorrect.
• Option 3: Tension is a force that acts when there is a string or rope pulling an object. There is no such element in the man - pushing - box scenario, so this option is wrong.
• Option 4: Wind force is not mentioned in the problem description. The problem is about a man pushing a box on the floor, so this option is not relevant.

Answer:

Gravity, Normal, Applied, Friction