Now sketch the components!

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Presentation transcript:

Now sketch the components! Do Now: A box is being pushed up an incline at a constant speed. Draw a FBD for the box. Now sketch the components!

Aim: How can we apply Newton’s Laws to objects on an incline? HW: Last Soap and block problem (2 Worksheets)

Steps for Calculating Forces on Inclines Draw a FBD Write sum of the forces and Newton’s law for each direction. Sum of forces equal 0 if in equilibrium, but “ma” if there is a NET force or acceleration. Solve for unknowns

Frictionless vs. Friction It is very important to read the question for if there is friction or not! No Friction Friction How does this affect an object on an incline?

The bar of soap! We all love soap… it keeps us clean and keeps us safe! Let’s talk about two great things… soap and physics! Using the worksheet as a guide and our notes from last class, answer the following questions regarding the bar of soap. Take notice that there is no friction here!

Steps for Calculating Forces on Inclines Draw a FBD Write sum of the forces and Newton’s law for each direction. Sum of forces equal 0 if in equilibrium, but “ma” if there is a NET force or acceleration. Solve for unknowns

Incline Plane with friction WS Similar to the bar of soap, we have a block on an incline, but we are pushing up and there is friction!

HW Finish the last problem on each sheet for HW. …This is very important! Completing these examples is not only good practice, but will allow you to have a better understanding! Work together and come for help if needed!