To address problems using Newton's second law (Fnet = ma), calculate the force, determine the mass, and solve for acceleration, ensuring to consider the unit of force (Newton) and the directions of forces. The correct answer is option d.
The question pertains to Newton's second law of motion, which is a fundamental concept in physics. Newton's second law states that the force (Fnet) acting on an object is equal to the mass (m) of the object multiplied by its acceleration (a), or Fnet = ma. To solve problems using this law, one can follow these steps:
- Calculate the force: This involves identifying all the external forces acting on the object and finding their resultant if more than one force acts on it.
- Determine the mass: The mass of the object must be known or determined to relate it to the force and acceleration.
- Solve for acceleration: Acceleration can be found by rearranging the equation a = Fnet/m using the given values for net external force and mass.
- To apply Newton's second law accurately, it is essential to understand the units involved (SI unit of force is Newton) and to consider the directions of forces, with forces acting in opposite directions having opposite signs.
When tackling such problems, it's also crucial to use a free-body diagram to visually represent the forces involved and to apply the equation methodically, considering all the relevant forces.
Therefore, option d is correct.