220Midterm2

220Midterm2 - 220/spring2010 GiambattistaM/GB06P001-mc.pr...

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Unformatted text preview: 220/spring2010 GiambattistaM/GB06P001-mc.pr for user cui (Last updated: Tue Jun 29 13:40:15 2004) Dragging the laundary basket Don't Forget to Give Answers in Specifed Units ! If you have a Fgure in the present problem do not use the numbers shown in the Fgures. Please use the numbers given in the text of the problem unless you are asked to use the numbers from the Fgure! How much work must Denise do to drag her basket of laundary of mass 5.0 kg a distance of 5.0 m along a ¡oor, if the force she exerts is 30.0 N at an angle of 60.0 with the horizontal? 150 J 1. 75 J 2. 80 J 3. 130 J 4. ____________________ [weight: 1] Maximum number of attempts for credit = 2 Correct answer shown after deadline 220/spring2010 GiambattistaM/GB06P033-mc.pr for user cui (Last updated: Thu Jul 29 15:05:19 2004) A child on a swing Don't Forget to Give Answers in Specifed Units ! If you have a Fgure in the present problem do not use the numbers shown in the Fgures. Please use the numbers given in the text of the problem unless you are asked to use the numbers cui 220/spring2010 Homework Problem Listing https://chip.physics.purdue.edu/cgi-bin/220/spring2010/Instruct... 1 of 10 3/13/10 3:44 AM from the Fgure! The maximum speed of a child on a swing is 4.9 m/s. The child's height above the ground is 0.70 m at the lowest point in his motion. How high above the ground is he at his highest point? 0.7 m 1. 1.9 m 2. 1.3 m 3. 2.1 m 4. ____________________ [weight: 1] Maximum number of attempts for credit = 2 Correct answer shown after deadline 220/spring2010 GiambattistaM/GB06P051-mc.pr for user cui (Last updated: Fri Jul 9 11:32:59 2004) Power of a bike rider Don't Forget to Give Answers in SpeciFed Units ! If you have a Fgure in the present problem do not use the numbers shown in the Fgures. Please use the numbers given in the text of the problem unless you are asked to use the numbers from the Fgure! A bicycle and its rider together have a mass of 75 kg. What power output of the rider is required to maintain a constant speed of 4.0 m/s (about 9 mph) up a 5.0% grade (a road that rises 5.0 m for every 100 m along the pavement)? Assume that frictional losses of energy are negligible. 150 W 1. 300 W 2. 200 W 3. 75 W 4. ____________________ [weight: 1] cui 220/spring2010 Homework Problem Listing https://chip.physics.purdue.edu/cgi-bin/220/spring2010/Instruct... 2 of 10 3/13/10 3:44 AM Maximum number of attempts for credit = 2 Correct answer shown after deadline 220/spring2010 GiambattistaM/GB07P005-mc.pr for user cui (Last updated: Mon Aug 2 17:21:54 2004) Total momentum Don't Forget to Give Answers in Specifed Units !...
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220Midterm2 - 220/spring2010 GiambattistaM/GB06P001-mc.pr...

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