- #1
makeAwish
- 128
- 0
Can i ask sth?
Why centripetal accel is from an internal force?
Usually what type of forces can be considered as external force, besides friction?
And, for static equilibrium, do we only use the eqn: sum of forces equals zero, or we can also apply sum of moments equals zero?
Thanks!
Why centripetal accel is from an internal force?
Usually what type of forces can be considered as external force, besides friction?
And, for static equilibrium, do we only use the eqn: sum of forces equals zero, or we can also apply sum of moments equals zero?
Thanks!