Calculate the gravitational potential energy of the skater a

Calculate the gravitational potential energy of the skater at the top of the track

What forces do work on the skater when moving along the flat surface? What is the distance traveled by the skater along the flat surface? Use the “Measuring Tape” to determine it. Select the answer closest to your measurement. Make sure that you click \"Clear Heat\" before every run.

Calculate the net work done by all forces acting on the skater when moving along the horizontal surface using the work kinetic energy theorem

Calculate the normal force acting on the skater when moving along the flat surface what forces do work on the skater when moving along the flat surface

Using the work kinetic energy theorem and the definition of work, find the coefficient of friction for the flat surface

Energy Skate Park (2.13) File Tracks Help Tracks Show Path Energy Graphs Show Pie Chart Clear with Thermal Bar Graph Energy vs. Position Energy vs. Time Location O Space (-) Moon Earth Jupiter Gravity 9.81 N/kg Space Ear Space Earth Jupiter Clear Heat Hide Friction

Solution

PE = mgh

b)While going down the incline the only work done is by gravity.

The normal reaction does no work becuase it is perpendicular to velocity

c)let the friction coeffiecient be u, then the Kinetic enrgy gained by skater equals work by friction

then mgh=umgx

x = h/u

d)The normal force acting on skater = weight W =mg because there is no accleration in vertical direction