Q:
# What is Newton's second law in terms of Atwood's machine?

**Newton’s second law states that the force acting on an object is directly related to the acceleration.** The law is formulated as F = m x a, where F = force, a = acceleration and m = mass of the object in motion. In terms of Atwood’s machine, a force equal to the difference in the suspended weights accelerates the total mass, m1+ m2.

For two masses hanging on an Atwood machine, acceleration is numerically the same, according to Georgia State University’s Hyperphysics. If one of the two masses, m2, is greater than the other, m1, the system accelerates in the direction dictated by m2. The net force is given by Fnet = m2 x gravity – m1 x gravity, which is the difference in the two weights. Acceleration is given by the net force divided by total mass (m1 + m2). Thus, a = ((m2-m1) x g) / (m1+m2). The system assumes negligible friction and pulley mass.

The law of motion means that increasing a force acting on a moving object increases the acceleration, provided the mass of the object remains constant. If the force remains constant, but the mass increases, the object decelerates. Thus, mass and acceleration are inversely related.

Learn more about Motion & Mechanics-
Q:
## What is Newton's law of universal gravitation?

A: Newton's law of universal gravitation states that the force of gravity is a universal force between all objects proportional to both masses and the square ... Full Answer >Filed Under: -
Q:
## What is the law of inertia?

A: The law of inertia states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless... Full Answer >Filed Under: -
Q:
## What is Hooke's law?

A: Hooke's law, also known as the law of elasticity, states that for small deformations of an object, the size of the deformation or the displacement is direc... Full Answer >Filed Under: -
Q:
## What is an example of the second law of motion?

A: An example of Newton's second law of motion would be if someone's car ran out of gas and they tried to push it and, because the car is much heavier, it wou... Full Answer >Filed Under: