PHY 1010U Lecture Notes - Lecture 8: Free Body Diagram, Friction, Contact Force
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Example: anna is testing her strength against her two little brothers. She pulls a weightless box with a force 49 n, and her brothers pull the box as shown. Example: tina and her sled are beeing pulled by her friend up a frictionless snow- covered hill at a constant speed. The hill makes a 30. 00 slope and the rope the friend pulls makes 10. 00 with the hill. Tina and the sled have a combined mass of. Draw the free body diagram and find the normal force. Example: kevin pushes a 0. 40 kg picture against a frictionless wall to hold the picture in place. Plot the free body diagram of the picture. Can kevin keep the picture in place: yes, picture will stay in place, no, picture will slide down. From the force diagram you see there is no way the picture is in equilibrium because fnet y = fg and points down.
