Khan Academy Static

4A: If you've ever moved from one town to another, you are likely familiar with inclined planes. When you push up that 50 pound box into the long flatbed truck , there are several forces at play: the weight of the box, the frictional force between the box and the ramp, and the force of your push. We will explain how these forces interact so next time the move won't be so back-breaking.

15151_Correction_to_force_of_friction_keeping_the_block_stationary.html

15154_Static_and_kinetic_friction_example.html

15148_Inclined_plane_force_components.html

15149_Force_of_friction_keeping_the_block_stationary.html

15152_Force_of_friction_keeping_velocity_constant.html

15150_Ice_accelerating_down_an_incline.html

15153_Intuition_on_static_and_kinetic_friction_comparisons.html