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 10m reviewed Approve Moment of inertia of 4 particle system 1d comment Condition for a particle to move on a sphere It has to have an initial velocity in order for the particle to move away from the equilibrium point (top). 1d answered Could 1 force cause a pure moment? 1d comment Why does Torque exist? You should award the answer that was most helpful to you. 1d comment Position, velocity, acceleration, jolt, and Possible duplicate of Physical intuition for higher order derivatives 2d reviewed Reject Why does friction produce heat? 2d answered Understanding work with rotational momentum/moment of inertia 2d comment Based on newtons third law Why the ALL CAPS on the title? It is considered yelling, and thus rude. 2d revised When only part of the surface an object is in contact with has friction, what is the normal force I should use? added 796 characters in body 2d comment When only part of the surface an object is in contact with has friction, what is the normal force I should use? Yes, friction would create an applied torque, which would need to be reacted upon from the load distribution. On the other hand, we don't know where the force to push the block is applied and if it creates a torque also. So there isn't enough information to really solve this. 2d comment When only part of the surface an object is in contact with has friction, what is the normal force I should use? @Floris I know quite a lot about contact pressure distributions and in this situation the reactions are concentrated on the edges. Similar to physics.stackexchange.com/a/253337/392. Only if the block had curvature the pressure distribution would be "even". 2d comment Apply torque in 3d Related answer: physics.stackexchange.com/a/107987/392 2d comment Apply torque in 3d You use the equations of motion to describe how the orientation changes. 2d comment Apply torque in 3d Depends on how you describe the orientation of the body. May 1 comment How does force transmit through a solid block? PowerPoint for the win! Actually the graphics are in PowerPoint and the math text in $\rm\TeX$. I used the IguanaTex add-in for powerpoint. May 1 awarded Revival May 1 revised How does force transmit through a solid block? added 212 characters in body May 1 answered How does force transmit through a solid block? May 1 answered Is drag force in the direction of particle motion or opposite to motion? May 1 comment Finding $\theta$ at any point in time Where $F_x$ is any horizontal driving force at the pivot, $\tau$ any torque at the pivot (like a rotational spring) and $F_y$ the vertical reaction force (to be calculated).