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The resistance a surface or object encounters when moving over another.
3
votes
4
answers
282
views
Why are our feet fixed when walking?
Why are our feet fixed when walking? Why does the static frictional force acting on our feet not push our feet forward ?
0
votes
1
answer
68
views
Why does the net torque not turn this object? [closed]
Here the object does not spin on the surface. (point $O$ has $M_o = 0$) However, there are non-zero net torques on the object at points $A$ and $B$ ($M_a$, $M_b \neq 0$). Why do these net torques not …