Solve Mass: Vertical Pully w/ 4kg Weight Accel 2m/s2

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In summary, the conversation discusses a vertical pulley with two weights attached, one of which is 4kg and the other is unknown. The 4kg weight is heavier and accelerates at a rate of 2m/s2. The homework equations being used are f=ma, and the solution involves drawing free-body diagrams for both masses and using Newton's 2nd law to determine the net force acting on each mass.
  • #1
physcisjay011
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Homework Statement


A vertical pully has two weights attached. One of the weights is 4kg while the other weight is unknown. The 4kg weight is heavier and accelerates 2m/s2

Homework Equations


f=ma

The Attempt at a Solution


i have no idea...
 
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  • #2
What kind of pulley system are we dealing with here? Is it an Atwood's machine, ie, both masses are just hanging from a pulley? Or are we dealing with a pulley system where one mass rests on a table and another hangs from a pulley?
 
  • #3
First draw free-body-diagrams for both masses. To use the Newton's 2nd law you will need to know the net force acting on each mass.
 

Related to Solve Mass: Vertical Pully w/ 4kg Weight Accel 2m/s2

1. What is the formula for calculating acceleration in a vertical pulley system?

The formula for calculating acceleration in a vertical pulley system is a = (m1 - m2)g / (m1 + m2), where m1 is the mass of the hanging weight and m2 is the mass of the counterweight.

2. How do I determine the tension in the rope in a vertical pulley system?

To determine the tension in the rope, you can use the formula T = m1a + m1g, where T is the tension, m1 is the mass of the hanging weight, a is the acceleration, and g is the acceleration due to gravity.

3. How does the acceleration of the system change if the mass of the hanging weight is increased?

If the mass of the hanging weight is increased, the acceleration of the system will decrease. This is because the increased weight will cause a larger force to be exerted on the counterweight, resulting in a slower acceleration.

4. How does the acceleration of the system change if the mass of the counterweight is increased?

If the mass of the counterweight is increased, the acceleration of the system will increase. This is because the increased weight will cause a larger force to be exerted on the hanging weight, resulting in a faster acceleration.

5. Is the acceleration of a vertical pulley system affected by friction?

Yes, the acceleration of a vertical pulley system can be affected by friction. If there is friction present in the pulley or on the surface where the rope is moving, it can decrease the acceleration of the system by adding a counteracting force. However, this effect is often negligible in simple pulley systems.

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