Question

10. + 0/4 points Previous Answers SerPOP4 5.P.038. My NC A 2.00 kg aluminum block and a 7.10 kg copper block are connected by a light string over a frictionless pulley. They sit on a steel surface, as shown in Figure P5.38, where 0 = 33.0°. Aluminum Copper m2 Steel Figure P5.38 When they are released from rest, will they start to move? Refer to Table 5.1 for the coefficients of friction. O Yes Ο Νο If so, determine the following. Enter a zero in each box if they do not move. (a) their acceleration .843 m/s² (b) the tension in the string 10.89 If not, determine the sum of the magnitudes of the forces of friction acting on the blocks. Enter zero if they do in fact move.

Answer 1

H fr Steel and aobetoeen Guminium O.61 Steel is O.53 Copper ad AI: 2.0 k Coffer 33 N2EMg coso ma sino mg coso max fiJum = 0.61 x 2x9.8|z 1]. 97 N nar f= ul,g cos - 0 53x 7.1x9.01x cos 30 96 N nut pullig fere is ma sino 7.1x 9.81 x Sin33° 37.93N Nous 1197+30.96 4 263 ic greater an Pullig fore Blocks will not 9s nove No net pulli Sum f frichion= force