Hey, First off thanks for having a look at these probs, i'm awful at mechanics so they're probably quite easy!

1. A woman of mass m sits on a bench mass M which together with the woman is set in linear motion under a constant force F. Find the value F so that the woman slips off the bench, friction being (mew).

2. A man of mass m sits on the edge of a disk radius R. The disk starts spinning with slowly increasing angular velocity (omega). Given that the friction coefficient is (mew), find the value of (omega) when the man slips off the disk.

Thanks in advance!