What is the net force on a 5 Kg crate that experiences 30 N of frictional force and has an applied force of 70 N? What is the acceleration of the crate?
net = 70 N - 30 N
acceleration = net force / mass ... m/s^2
To find the net force on the crate, we need to calculate the difference between the applied force and the frictional force.
1. Add the forces acting in the same direction:
Applied force = 70 N
Frictional force = -30 N (since it acts opposite to the motion)
Net force = 70 N + (-30 N) = 40 N
The net force on the crate is 40 N.
Now, we can calculate the acceleration of the crate using Newton's second law of motion:
2. Apply Newton's second law of motion:
Net force = mass × acceleration
Rearranging the formula, we have:
Acceleration = Net force / mass
Given:
Net force = 40 N
Mass = 5 kg
Acceleration = 40 N / 5 kg = 8 m/s²
Therefore, the acceleration of the crate is 8 m/s².