. A horizontal force of 15 newtons pulls a 5-kilogram block along a horizontal surface. If the force produces an acceleration of 2 meters per second 2 , the frictional force acting on the block is
5 newtons.
To find the frictional force, we first need to calculate the net force acting on the block. The net force is given by the formula:
Net force = Applied force - Frictional force
Since the block is moving along the surface, the frictional force acts in the opposite direction of the applied force. So the net force is:
Net force = 15 N - Frictional force
Next, we use Newton's second law of motion which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration. So we have:
Net force = Mass x Acceleration
Substituting the values given in the question, we have:
15 N - Frictional force = 5 kg x 2 m/s^2
15 N - Frictional force = 10 N
Frictional force = 15 N - 10 N
Frictional force = 5 N
Therefore, the frictional force acting on the block is 5 newtons.
15 - friction force = m a = 5 * 10 = 10
so
friction force = 5 Newtons