Part 1
Consider an inclined plane at an angle of 40.0°, with a kinetic coefficient of friction of
0.250. A block with mass of 50.0 kg is lying on the incline, initially at rest. A force of 980 N
is applied 20.0° above the incline, pulling the block a distance of 10.0 m up the incline.
Perform the following.
a) Determine the speed of the object at the end of the displacement using Newton's
Laws of motion.
b) Simulate on IP and determine the % error in the acceleration up the incline and the
speed v at the end of the displacement.
c) Repeat the above calculation using the Work-Kinetic Energy Theorem and
determine the % error in the speed of the object at the end of the displacement.
1
KE ==mv2
mv²
2
W = FAX cos
Wnet KE - KE₁ = AKE
=
PE=mgy
d) Repeat the calculation again using Wnc
= AKE+APE. Determine the % error in the
speed of the object at the end of the displacement. An alternate form of this
equation is KE, + PE + Wnc KEF + PE
i-f
=