7. A small block with mass m 1 rests on a frictionless horizontal tables at a di
ID: 2140252 • Letter: 7
Question
7. A small block with mass m1 rests on a frictionless horizontal tables at a distance r from a hole. A string tied to the block passes through the hole to a second block of mass m2. The small block is put in circular motion with a radius r and speed v. What must v be if the large block m2 is to remain motionless?
Explanation / Answer
m2 to remain stationary
m2g =m1*v^2/r
so V =sqrt(m2g*r/m1)