← L73 14 75 76 78 79 80 81 82 8.8 84 85 86 87 88 C + PHYS-6-24363 E 87"F Sunny Phys 6 Group 4 File Edit View Insert Form

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: L73 14 75 76 78 79 80 81 82 8 8 84 85 86 87 88 C Phys 6 24363 E 87 F Sunny Phys 6 Group 4 File Edit View Insert Form 1 (183.38 KiB) Viewed 31 times

← L73 14 75 76 78 79 80 81 82 8.8 84 85 86 87 88 C + PHYS-6-24363 E 87"F Sunny Phys 6 Group 4 File Edit View Insert Format Data Tools Extensions Help %0.00 123 Times New... A fx 100% C|answers.com $ X GeeklyHub D T B C Investigation B: Kinetic Friction Introduction: If a wood block is placed on a horizontal surface as shown in the figure below, the block can be made to slide with a constant speed if you connect it to a hanging mass via a string. The block will not start to slide without being given a tap because the kinetic friction force is less than the static friction force. 10 E Lab 5: Newton's Laws 1 Last edit was 5 hours ago BISA The kinetic friction force is describe by the equation f-N. N is the normal force of the surface on the block and is another constant that depends on properties of both materials in contact at the interface. F Procedure: 1) In the diagram above, draw a free body diagram of the vertically hanging mass shown in the diagram (label this mass m:). There are two forces acting on this mass that you nood to label on your diagram: the tension in the string (T) and the weight of the hanging mass (W) 2) In the diagram above, draw a free body diagram of the mass on the table as it slides (label this mass m.). There are four forces acting on this mass that you need to label on your diagram: the tension in the string (T), the normal force (N), the friction force (f) and the weight of the sliding mass (W:). 3) If the hanging mass is descending at a constant speed, what can we say about its acceleration? າ: = m/s² 4) Apply Fama to the y direction for mass #2 (the hanging mass). Use this to come up with an expression for the tension in the string that only depends on me and g. Lab 6: Newton's Laws 2 H Phys 6 Group 4 - Google Sheets X + Lab 7: Projectiles H Lab 8: Friction ▾ (DRL) 101 P 1 GDY Σ. E- Lab 9: Energy 1 B J 30 201 10 K 1₂ Lab 10: Energy 4 L Aª 0 M 33 Share N + ☎ do t C • Ⓒ 8 ? + 5:53 PM 7/8/2022
← L73 8.8 91 92 93 95 96 97 99 100 101 102 103 104 105 106 107 108 109 110 111 112 C + PHYS-6-24363 A E 87"F Sunny Phys 6 Group 4 File Edit View Insert Format Data Tools Extensions Help $%0.00 123- Times New... fx 100% C|answers.com B X GeeklyHub E 10 Lab 5: Newton's Laws 1 Last edit was 5 hours ago BI & A T- N 5) If the hanging mass is sliding at a constant speed, what can we say about its acceleration? 81- m/s² 6) Apply F - ma to the y direction for mass #1 (the hanging mass). Use this to come up with an expression for the normal force that only depends on ms and ge F N= 7) Apply Fama to the x direction for mass #1 (the hanging mass). Use this and your result from step 4 to come up with an expression for the friction force that only depends on mu and & f- 8) You now have an expression for the kinetic friction force needed for the blocks to move at a constant speed. Now we'll use the fact that the kinetic friction force is equal to N. Set your expression from step 7 equal to p.N. You should be able to get an expression for that only de on m depends on mi and ms, and no other variables. Lab 6: Newton's Laws 2 H Lab 7: Projectiles Phys 6 Group 4 - Google Sheets X + G H Lab 8: Friction ▾ + |2|PGO Y Σ. E (DRL) GD Lab 9: Energy 1 B K Lab 10: Energy 4 L Aª O M 33 ^ Share N + C 21 • Ⓒ 8 ? + > 5:53 PM 7/8/2022 +
← 8.8 L73 114 115 116 117 118 119 120 121 122 123 124 125 120 127 128 129 130 131 C + PHYS-6-24363 A = 87"F Sunny Phys 6 Group 4 File Edit View Insert Format Data Tools Extensions Help $ %0.00 123 Times New... fx 100% C|answers.com B C D X GeeklyHub E Lab 5: Newton's Laws 1 10 His- 9) Measure the mass of the sliding wood block using the triple-beam balance. Record your measurement on the line above the table below. 10) Set up the equipment as shown in the figure in the introduction section on page 4. For the first run no weights are placed on top of the block. Be sure that the string is parallel to the surface on which the block slides (as shown in the figure). 24.58 Last edit was 5 hours ago BISA 11) Put the block near the end of the ramp farthest from the pulley. Add mass to the hanging tray until the block will slide at a constant speed when given a small push. Try to minimize the swinging of the mass on the string because that causes the tension in the string to vary. Measure the total hanging mass (including the tray) using a triple beam balance, and record this value of m: in the top row of the table below. total sliding mass, m (g) 12) Place 100 grams on top of the block. Repeat step 15 you have done a run for a load on top of the block of 600g mass of block- mass on top of the block (g) 0 100 24.5 124.5 200 224.3 300 324.5 400 424 5 500 524.5 600 624.5 13) You are going to make a plot of the mass on the string (m.) versus the sliding mass (m) using Excel. You should have me on the vertical axis and m: on the horizontal axis. Ask your instructor if you need help using excel F total sliding mass, m. (g) 7.5 38.5 66.5 97 127.5 158 187.5 Lab 6: Newton's Laws 2 H Lab 7: Projectiles O Phys 6 Group 4 - Google Sheets X + G H Lab 8: Friction + |2|PGO Y Σ. E (DRL) GD Lab 9: Energy 1 B K Lab 10: Energy 4 L Aª O M 33 ^ Share N + C • e 8 ? + > 5:53 PM 7/8/2022 +
← L73 8.8 134 135 136 187 188 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 C + PHYS-6-24363 A = 87"F Sunny Phys 6 Group 4 File Edit View Insert Format Data Tools Extensions Help $%0.00 123 Times New... fx 100% C|answers.com B X GeeklyHub С E Lab 5: Newton's Laws 1 No data 10 Last edit was 5 hours ago BI & A 14) Fit a straight line to your data. The slope of this line is the coefficient of kinetic friction between the sliding block and the ramp H&= 15) Print out your graph and staple it together with the rest of your lab report. Make sure your aces are labeled with units shown and your trend line equation is displayed on the graph. 16) Compare your static friction coefficient (u) from investigation A to you kinetic friction onefficient (1) from investigation B. Which coefficient is larger? Does this make sense? Lab 6: Newton's Laws 2 F H Lab 7: Projectiles O Phys 6 Group 4 - Google Sheets X + G H Lab 8: Friction ▾ + |2|PGO Y Σ. E (DRL) GD Lab 9: Energy 1 B K Lab 10: Energy 4 L Aª O M 33 ^ Share N + C Ⓒ 8 ? + > 5:53 PM 7/8/2022 +