Calculating Coefficients of Friction Task 1: Answer the following questions 1. How does the mass of an object pulled along a horizontal surface affect the following parameters? (a) force of static friction - is affected by change in mass, if moss T friction will gon (b) force of kinetic friction (c) coefficient of static friction - The mass of an object Pulle along doesn't effect (d) coefficient of kinetic friction - 2. How does the type of material of a horizontal surface affect the following parameters? (a) force of static friction (b) force of kinetic friction (c) coefficient of static friction (d) coefficient of kinetic friction Task 2: Mass and the Force of Friction The data in the Table I were gathered using a force meter pulling horizontally on a block of wood placed on a level flat surface also made of wood. To increase the weight being pulled by the force meter, extra masses were added to the top of the block before each of the four trials. The diagram below shows the experimental set-up for the first part of this experiment, where the forward direction is to the right. The parameter being controlled in this experiment is the nature of the wooden surfaces. The variable being manipulated is the mass of the wood. The variables being measured are the forces of friction. The parameters being tested are the coefficients of friction. Block of wood Two extra masses Force sensor Force of friction drags String Applied force Wood surface