Finding tension and net force in a multi-body system

[asi123]

Homework Statement

In the attach

Homework Equations

Newton Laws

The Attempt at a Solution

Ok, I did the first one, came up with T2 = 8.736, is that right?
What is the net force?
How do I do the third one?

10x in advance.

 

[tiny-tim]

Ok, I did the first one, came up with T2 = 8.736, is that right?
What is the net force?
How do I do the third one?

Shalom asi123!

Yes, your T2 is right!

The net force is the vector sum of all the forces.

(By Newton's second law, it will be equal to mass times acceleration.)

Just add all the forces (obviously, the vertical components cancel, so you only have to add the horizontal components )

The use the formula for centripetal acceleration to find the speed.

 

[asi123]

Shalom asi123!

Yes, your T2 is right!

The net force is the vector sum of all the forces.

(By Newton's second law, it will be equal to mass times acceleration.)

Just add all the forces (obviously, the vertical components cancel, so you only have to add the horizontal components )

The use the formula for centripetal acceleration to find the speed.

Shalom Shalom.
10x.