Tension forces with weight and Friction

Open Ended

Correct answer gets an extra point

Multiple Choice

Are these two situations the same?

• Yes, same magnitude of force

• No, different type of force

• Not enough information

Multiple Choice

In which way does the pulley move?

$$m_1=36\ kg$$  

$$m_2=27\ kg$$  

• in the way of box $$m_2$$  

• in the way of box $$m_1$$  

• not enough information

• pulley doesn't move

Multiple Choice

In which way does the middle box move?

$$m_2=7\ kg$$  

$$m_3=4\ kg$$  

Assume the table is frictionless.

• in the way of box $$m_2$$  

• in the way of box $$m_3$$  

• not enough information

• pulley doesn't move

Fill in the Blank

If box $$m_3=4\ kg$$  is pulling with a force of 39.2 N.

What is the pulling force of box $$m_2=7\ kg$$  ?

Type answer with 1 decimal only

Fill in the Blank

What is the NET FORCE acting in the middle box?

Assume the table is frictionless

Type answer with 1 decimal only and with the corresponding sign

Fill in the Blank

What is the weight of the box $$m_2$$  if the NET FORCE acting in the middle box is 12 N?

Assume the table is frictionless.

Fill in the Blank

What's the value of the force of friction?

$$\mu=0.13$$  

$$F_N=250\ N$$  

Type answer with 1 decimal only

Multiple Choice

• 0.44

• 2.25

• 1.88

• 0.53

• 1.6

Multiple Choice

• 9 N

• 7.5 N

• 1.5 N

• 16.5 N

• Not enough information

Multiple Choice

• 2 N

• 7 N

• 5.5 N

• 11 N

• 9.5 N

Multiple Choice

In which box there's greater friction?

Assume they are all on the same type of surface and all three boxes have the same weight

• A

• B

• C

• They are all the same

Multiple Choice

In which box there's greater friction?

Assume they are all on the same type of surface and all three boxes have the same weight

• A

• B

• C

• They are all the same

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