A 50 kg crate is pushed with a force of 200 N. If the frictional force is 50 N,
Practice Questions
Q1
A 50 kg crate is pushed with a force of 200 N. If the frictional force is 50 N, what is the acceleration of the crate? (2022)
2 m/s²
3 m/s²
4 m/s²
5 m/s²
Questions & Step-by-Step Solutions
A 50 kg crate is pushed with a force of 200 N. If the frictional force is 50 N, what is the acceleration of the crate? (2022)
Step 1: Identify the total force applied to the crate, which is 200 N.
Step 2: Identify the frictional force acting against the motion, which is 50 N.
Step 3: Calculate the net force by subtracting the frictional force from the total force: 200 N - 50 N = 150 N.
Step 4: Identify the mass of the crate, which is 50 kg.
Step 5: Use the formula for acceleration, which is acceleration (a) = net force (F) / mass (m).
Step 6: Substitute the values into the formula: a = 150 N / 50 kg.
Step 7: Calculate the acceleration: a = 3 m/s².
Newton's Second Law – This law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Net Force Calculation – Understanding how to calculate the net force by subtracting frictional force from the applied force.
Frictional Force – Recognizing the role of friction in opposing motion and how it affects the net force.
