- #1

**Question:**

Mass

*m1*on the frictionless table is connected by a string through a hole in the table to a hanging mass

*m2*. With what speed must

*m1*rotate in a circle of radius

*r*if

*m2*is to remain hanging at rest?

My answer:

My answer:

Fnetym2 = T - m2g

For m2, a = 0

Therefore,

0 = T - m2g

T = m2g

Fnetxm1 = T

m1a = T

m1a = m2g

Therefore,

a = m2g / m1

Since a = v^2 / r, v = sqrt(ra)

Therefore,

v = sqrt(rm2g / m1)

**Is this correct?**