To calculate the net force in Newtons on an Atwood's machine, subtract the weight of the lighter mass from the weight of the heavier mass. For example, if one mass is 2.00 kg and the other mass is 4.00 kg, the net force would be 19.6 N.
Step-by-step explanation:
The net force in Newtons acting on the Atwood's machine can be calculated by considering the forces acting on the system. In an Atwood's machine, there are two masses connected by a rope passing over a pulley. The net force is the difference between the weight of the masses on either side of the pulley. To calculate it, you can subtract the weight of the lighter mass from the weight of the heavier mass.
For example, if one mass is 2.00 kg and the other mass is 4.00 kg, you can calculate the net force as follows:
Net force = Weight of heavier mass - Weight of lighter mass
= m1 * g - m2 * g
= (4.00 kg * 9.8 m/s^2) - (2.00 kg * 9.8 m/s^2)
= 39.2 N - 19.6 N
= 19.6 N.