At a given instant the 10-lb block A is moving downward with a speed of 6 ft/s. Block B has a weight of 4 lb, and the coefficient of kinetic friction between it and the horizontal plane is and pulleys. (Eigure 1) = 0.2. Neglect the mass of the cord Figure B A < 1 of 1
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- The two crates are released from rest. Their masses are m-40 kg and m-30 kg and the kinetic coefficient of friction between crate A and the inclined surface is pu-0.15. The angle between the inclined surface and the horizontal is 30" Figure A 30 1 of 1 > 1 ▼ Part A What is the magnitude of the velocity of the crates when they have moved 400 mm? (Eigure 1) Express your answer with the appropriate units. Submit 4 → m S Previous Answers Request Answer ? X Incorrect; Try Again; 4 attempts remaining < Return to Assignment Provide FeedbackTwo blocks A and B, each with a weight of 10 lb, are sliding along the inclined planes. Calculate the magnitude of the acceleration of the blocks when the kinetic friction coefficient is 0.1. Present your answer in ft/sec² using 3 significant figures. 60° B 30⁰The lower block of mass m2 = 3.2 kg is pulled on by a rope with a tension force of 28 N. The upper block has mass m1 = 1.8 kg. The coefficient of kinetic friction between the lower block and the surface is 0.32. The coefficient of kinetic friction between the lower block and the upper block is also 0.32. What is the acceleration of the 3.2 kg block?
- The 10-lb sultcase slides down the curved ramp for which the coefficient of kinetic friction is 4 = 0.2. At the instant it reaches point A it has a speed of 5 ft/s. Suppose that [= 5 ft. (Figure 1) Figure 1 of 1 Determine the normal force on the suitcase. Express your answer to three significant figures and include the appropriate units. N = Value Submit Part B Request Answer = Value Submit Determine the rate of increase of its speed. Express your answer to three significant figures and include the appropriate units. Units Request Answer Units ? < Return to Assignment Provide Feedback ?ame. Matric No: Instruction: Answer according to the given sequence, unable to do this will lead to zero mark!!!! And please read the question!!!!!. As shown in the figure, forces are applied to the box that has a mass of 75 kg. Given that the coefficient of kinetic friction between the box and surface is uk = 0.297. If the box is originally at rest and currently moving with a speed of v = 5 m/s: 450 N 200 N 35° 50° 1. Draw the free body diagram and find the normal and friction force of the box. . 2. Find its initial and final kinetic energy - 1** 3. Determine the distance that the box has travelled by using the principle of work and energy [/ 4. Calculate each work that is done to the box [1. 1 of 1Question 4 Two blocks are joined by an inextensible cable as shown. The mass of block A is 192.7 kg and the mass of block B is 291.4 kg. If the system is released from rest, determine the acceleration (in m/s²) of block B. Assume that the coefficient of friction between block A and the plane is uk = 0.23 and that the pulley is weightless and frictionless. Round off only on the final answer expressed in 3 decimal places. Use g = 9.81 m/s² A Add your answer 10 Point B
- The coefficient of kinetic friction between the60-kg crate and the ground is uf = 0.3. The crate starts from rest, and P = 225 N .(Figure 1) Part A Determine the velocity of the crate when t = 4s Express your answer to three significant figures and include the appropriate units. HẢ v = Value Units Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining • Part B Determine the distance the crate travels when 4 s Express your answer to three significant figures and include the appropriate units. Figure HÀ S = Value Units Submit Request Answer 30° Provide FeedbackThe 10-lb block has a speed of 4 ft/s when the force of F = (8t²) lb is applied. The coefficient of kinetic friction at the surface is μ = 0.2. (Figure 1) Figure F = (81²) lb v = 4 ft/s 1 of 1 > Part A Determine the speed of the block when it moves s = 30 ft. Express your answer to three significant figures and include the appropriate units. V = Submit 0 O μA Value Provide Feedback Request Answer Units ? Next >2. A force is applied to block A at angle of 40 degrees with the horizontal. Determine the friction force and the acceleration of block A in the system below if the coefficient of friction between A and the surface is 0.4. (Normal Force, N = 450N) Sign convention 15N 250 kg A B 75 kg
- The force of F = 45 N is applied to the cord when s= 2 m The 6-kg collar is orginally at rest. Neglect friction. (Figure 1) Figure 1.5 m 1 of 1 Part A Determine the velocity of the collar at s = 0. Express your answer to three significant figures and include the appropriate units. Enter positive value if the velocity is to the left and negative value if the velocity is to the right. V= Value Submit HA Provide Feedback Request Answer Units ?Two blocks are joined by an inextensible cable as shown. The mass of block A is 197.3 kg and the mass of block B is 257.1 kg. If the system is released from rest, determine the acceleration (in m/s? ) of block B. Assume that the coefficient of friction between block A and the plane is uk = 0.25 and that the pulley is weightless and frictionless. Round off only on the final answer expressed in 3 decimal places. Use g = 9.81 m/s? blocks.png ... A ВThe coefficient of kinetic friction between the50-kg crate and the ground is HE 0.3. The crate starts from rest, and P = 205 N. Part A Determine the velocity of the crate when t= 3s Express your answer to three significant figures and include the appropriate units. ANSWER Part B Determine the distance the crate travels when 3 s. Express your answer to three significant figures and include the appropriate units. ANSWER: s =