Name:_______________________________ 4-digit Code Number:_______________________________

- Consider the following Atwood's machine with
m
_{2}> m_{1}, and with a massless, frictionless ideal pulley.

- What is the acceleration of the mass m
_{2}?

- What is the tension in the string?

- What is the acceleration of the mass m
- Mass m
_{1}rests on a rough horizontal surface while mass m_{2}hangs over a massless, frictionless ideal pulley.

Explain**in detail**how this setup could be used to determine the coeficient of static friction_{s}between m_{1}and the table. (Remember, this is**static**friction, so what is the acceleration?) That is, explain carefully- what quantities must be measured,

- with what instruments quantities are to be measured (only measuring
instruments that you have used previously in this course),

- what procedures are to be used, in particular how the maximum value
of m
_{2}is determined,

- and derive an equation for
_{s}in terms of the quantities above.

- what quantities must be measured,

Go to the lab