>>139645745 is basic rotational equilibrium, draw a fbd and balance the forces and torques
6 is basic newtonian forces, fbd, find normal, find friction, find net force, find a
7 is 2d motion
8 is conservation of angular momentum
9 is work and energy, find the kinetic energy, find the work done by friction
10 is SHO
these are basic, basic problems OP - if you know the equations these take like five minutes each to work