/1 The 50-kg crate is projected along the floor with an initial speed of 7 m/s at x = 0. The coefficient of ki- netic friction is 0.40. Calculate the time required for the crate to come to rest and the corresponding dis- tance x traveled. Vo = 7 m/s 50 kg H₂ = 0.40 Problem 3/1
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- The 47-kg crate is stationary when the force Pis applied. Determine the resulting acceleration of the crate if (a) P - 0, (b) P – 151 N, and (c) P- 251 N. The acceleration is positive if up the slope, negative if down the slope. H, = 0.20 HA=0.15 47 kg 15 Part 1 Part (a). We need to decide if the block moves. The easy way to make this decision is to assume that the block does not move and then to test this assumption. If P- 0, what friction force Fis needed to keep the block from moving? mg N Answer: F-The 50-kg block in the figure is initially at rest on a horizontal plane. Determine the friction force between the block and the surface after P was gradually increased from 0 to 245.25 N. In which phase will the block be classified (Phase 1- no motion, Phase 2 - impending motion, or Phase 3 - in motion)? = 50(9.81) = 490.5 N W 4, = 0.5 H= 0.2 %2D Hint: At which phase will the block be if P-245.25N - Phase 1 (no motion)? Phase 2 (impending motion)? Phase 3 (in motion)? Make use of the coefficient of friction and the normal force to solve for the maximum frictional force.(b) The cantilever beam which has length 2 m is as shown as in Figure Q2. It is loaded with triangular distributed load of 3 kN/m from A to B and point load at B. (i) Calculate the support reactions. (ii) Determine the shear force value and sketch the shear force diagram. Determine the bending moment value and sketch the bending moment diagram. (iii) END OF QUESTIONS – DI
- - 1 attachment - 6. A construction lift is rising with a velocity of 2.5 m/s when a bag of cenent isv released. If the height at the time of release is 160 m, how long does it take the bag of cement to reach the ground? What is the velocity of impact?ISU ISTINYE UNIVERSITY I STA N B UL dn 30-cm×20-cm block weighing 150 N is to be moved at a constant velocity of 0.8 nled n inclined surface. If a 0 4-mm-thick oil £GIM with a viscosity of 0.012 Pa.s is he blosoetween the block and inclined surface determine the force required for moving Question 1: the block upward. V=0.8 m/s 50cm 30 cm 200 150 N estion 2:A crate with a given weight of 50kg translates on the surface shown at velocity of 7mn/s at t-0. u - 0.40. How long will it take for the crate to stop moving? How far would it have travelled? %3D Vo37 m/s 50 kg HE =0.40 O t-1.24s; x=D3.19m O t-2.14s; x=8.40m O t=1.784s; x-6.24m O t-1.884s; x=3.14m O t-2.08s; x= 2.91m O t-1.0245; x-2.19m
- If the coefficient of kinetic friction between the 37-kg crate and the ground is μk = 0.31, determine the distance the crate travels in meters when t = 3.1 s. The crate starts from rest, and P = 254 N. Take θ = 33 oA 50-cm x 30-cm x 20-cm block weighing W is to be moved at a constant velocity of 0.80 m/s on an inclined surface with a friction coefficient of 0.27. (a) Determine the force F that needs to be applied in the horizontal direction. (b) If a t-mm-thick oil film with a dynamic viscosity of 0.012 Pa-s is applied between the block and inclined surface, determine the percent reduction in the required force. 50 cm 20⁰ 30 cm Last 2 digit of YorkU ID# >= 50 t (mm) 0.25 Last 2 digit of YorkU ID# 0.20 <50 V = 0.8 m/s W (N) 400 500How was this 0.68 V2 calculated? And also 40.77 f V2 because I am not getting that..
- Q5. Two forces P and Q are applied to the lid of a storage bin (Figure 3). Knowing that P = 60 N and Q = 48 N, determine the magnitude and direction (from horizontal) of the resultant of the two forces.1. ム 0. 33 N V= 0.33 fes OIL PLATE 0,67 Iw. OIL FIND THE FORCE REQUIRED DATA : 0.0063 b. SEC A BSOLUTE = VISCOSITY COL) DENSITY 1.78 SLUC fut 11 OIL A, 4 ft? 4 fiat PLATE E QS T = Ju dV F = 7 AIn (Figure 1), k = 180 N/m. Figure 2 m -2 m D -3 m- wwwwww 1 of 1 Part A Determine the unstretched length of DB to hold the 40-kg crate in the position shown. Express your answer to three significant figures and include the appropriate units. 1 = O Ti Value Submit μA Provide Feedback Request Answer Units