How Do You Solve Tension Problems with Friction and Acceleration?

[max1995]

Homework Statement

See image attached

Homework Equations

The Attempt at a Solution

bii) T_c=m_c(a+g)

Need help on Ci what I did is

(9x9.81) -uR-6g=10a

Have no idea what to do though really

 

[Simon Bridge]

bii) Tc=mc(a+g)

... this does not follow from b(i). Please show your reasoning.

Have no idea what to do though really...

... did you read the hint?
But you should complete b before starting c.

 

[max1995]

... this does not follow from b(i). Please show your reasoning.
... did you read the hint?
But you should complete b before starting c.

for bii i just assumed the expressions would be the same, how would i go about getting an expression for Tc?

 

[Simon Bridge]

The b(i) equation defines a sign convention ... you should work out the derivation they did using a free body diagram.
Then for b(ii), you want to do the same derivation, but you have to make sure the sign convention is consistent with the first one.