At the bottom of an air track tilted at angle u, a gliderof mass m is given a push to
Chapter 8, Problem 3(choose chapter or problem)
At the bottom of an air track tilted at angle u, a gliderof mass m is given a push to make it coast a distance dup the slope as it slows down and stops. Then the glidercomes back down the track to its starting point. Now theexperiment is repeated with the same original speed butwith a second identical glider set on top of the first. Theairflow from the track is strong enough to support thestacked pair of gliders so that the combination movesover the track with negligible friction. Static frictionholds the second glider stationary relative to the firstglider throughout the motion. The coefficient of staticfriction between the two gliders is ms. What is the changein mechanical energy of the two-gliderEarth system inthe up- and down-slope motion after the pair of glidersis released? Choose one. (a) 22msmg (b) 22mgd cos u(c) 22msmgd cos u (d) 0 (e) 12msmgd cos u
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