Question

A 25kg box starts from rest and slides down a 200m frictionless ramp that has an angle of 20degrees from the horizontal. What is the acceleration of the box.

4pts. Draw a Freebody diagram, assign a meaningful coordinate system, identify all forces acting on the free body diagram.
2pts. Apply Newton’s second law to show how you calculate net force and the relationship between mass and acceleration.
2pts. Identify known and unknown variables.
2pts. Solve

Answer 1

acceleration =9.2089

Step-by-step explanation:

force acting: gravity, normal force exerted by the box

F=m*a

= 25*g

=25*gcos(20)

= 230.224N

acceleration= gcos(20)

= 9.8*0.939

acceleration =9.2089