The lever is a movable bar that pivots on a fulcrum attached to or positioned on or across a fixed point. The lever operates by applying forces at different distances from the fulcrum, or pivot.
A lever amplifies an input force to provide a greater output force, which is said to provide leverage. The ratio of the output force to the input force is the mechanical advantage of the lever.
The mechanical advantage of the lever is increased by moving the fulcrum closer to the load i.e., by shifting the fulcrum towards the right. Moving the fulcrum away from the load has mechanical disadvantage as the distance between the load and the fulcrum increases, the input force becomes greater than the output force.
Answer:
As described, The mantle causes the tectonic plates to move.
Have them give up there phone for 15 minutes
talk to them when there in a good mood
watch a movie then have a disscution about it
The student does zero work on the backpack because the upward force applied by the student is acting <em>perpendicular</em> to the backpack's displacement parallel to the ground.
Yes. Newton's laws do not apply at the subatomic level. There you are entering the weird world of Quantum Theory. Go read about the '2 holes experiment'. It will blow your mind.