Homework Answers
When we equated motor force to the weight of the box , a time
period of 2.61 seconds is needed to start lifting the box but in
continution we required to find the velocity of box at 2 sec . At
that particular time box is resting on the ground and it has no
velocity. If given t is greater than 2.61 sec then box tends to
lift with some velocity
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Problem 1: The box has weight of 34-lb. It is originally at rest on the ground,...
please help dynamics Problem 1: The box has weight of 34-lb. It is originally at rest...
please help dynamics
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of F = 5t2 lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t-2 seconds А
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground,...
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of F = 5t² lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t=2 seconds A
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground,...
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t =2 seconds A
GROUP PROBLEM-1 SAN FRANCISCO STATE UNIVERSITY Given: The 300-kg bar B, originally at rest, is towed...
GROUP PROBLEM-1 SAN FRANCISCO STATE UNIVERSITY Given: The 300-kg bar B, originally at rest, is towed over a series of small rollers. The motor M is drawing in the cable at a rate of v (0.4 t2) m/s, where t is in seconds. Find: Force in the ca ble and distance s whent 5s. Plan: Since both forces and velocity are involved, this problem requires both kinematics and the equation of motion. 1) Draw the free-body and kinetic diagrams of...
Solve A nd B please <H.W.114 Problem 13.38 The 380-kg bar B, originally at rest, is...
Solve A nd B please <H.W.114 Problem 13.38 The 380-kg bar B, originally at rest, is being towed over a series of small rollers. The motor M is drawing in the cable for a short time at a rate of v =(0.4?) m/s, where t is in seconds (0 <t<6s). Neglect the mass of the cable, pulley, and the rollers. (Figure 1) Figure < 1 of 1 B O Type here to search Part A Determine the force in the...
Q=125 m/s Problem 2, A mine car has a mass m = 250 kg and it...
Q=125
m/s Problem 2, A mine car has a mass m = 250 kg and it is hoisted up the incline using the cable and motor M. The force in the cable is F(t) = 1050 + (30) t?, N where t is in seconds. If the car has an initial velocity v. = 3 m/s at s = 0 and t = 0. Q4) What is the velocity of the car when t = 3 s, in (m/s). (5)...
Problem 19.25 ( 13 of 14 Review The 45-lb flywheel A has a radius of gyration...
Problem 19.25 ( 13 of 14 Review The 45-lb flywheel A has a radius of gyration about its center of 4 in. Disk B weighs 70 lb and is coupled to the flywheel by means of a belt which does not slip at its contacting surfaces. A motor supplies a counterclockwise torque to the flywheel of M = (50t) lb. ft, where t is in seconds. (Figure 1) Part A Figure Determine the time required for the disk to attain...
Problem 19.25 The 30-lb flywheel A has a radius of gyration about its center of 4...
Problem 19.25 The 30-lb flywheel A has a radius of gyration about its center of 4 in. Disk B weighs 65 lb and is coupled to the flywheel by means of a belt which does not slip at its contacting surfaces. A motor supplies a counterclockwise torque to the flywheel of M - (508) lb. ft, where t is in seconds. (Figure 1) Part A Determine the time required for the disk to attain an angular velocity of 90 rad/s...
Problem 1 Equilibrium of a Body in 2D (50pts) The ramp of a ship has a...
Problem 1 Equilibrium of a Body in 2D (50pts) The ramp of a ship has a weight of 500 lb and a center of gravity G. An operator weighing 180 Ib is standing at point E, 4.5 ft from A, as shown. Determine the tension on the cable CD needed to just start lifting the ramp, i.e when the reaction at B becomes zero. Also, determine the horizontal and vertical components of force at the hinge at A. Show Free...
please help dynamics
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of F = 5t2 lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t-2 seconds А
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of F = 5t² lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t=2 seconds A
Problem 1: The box has weight of 34-lb. It is originally at rest on the ground, ignore the mass of the cable and pulleys. The motor pulls with a force of lb, where t is in seconds. Determine the time needed to start lifting the box and the velocity of box when t =2 seconds A
GROUP PROBLEM-1 SAN FRANCISCO STATE UNIVERSITY Given: The 300-kg bar B, originally at rest, is towed over a series of small rollers. The motor M is drawing in the cable at a rate of v (0.4 t2) m/s, where t is in seconds. Find: Force in the ca ble and distance s whent 5s. Plan: Since both forces and velocity are involved, this problem requires both kinematics and the equation of motion. 1) Draw the free-body and kinetic diagrams of...
Q=125
m/s Problem 2, A mine car has a mass m = 250 kg and it is hoisted up the incline using the cable and motor M. The force in the cable is F(t) = 1050 + (30) t?, N where t is in seconds. If the car has an initial velocity v. = 3 m/s at s = 0 and t = 0. Q4) What is the velocity of the car when t = 3 s, in (m/s). (5)...
Problem 19.25 ( 13 of 14 Review The 45-lb flywheel A has a radius of gyration about its center of 4 in. Disk B weighs 70 lb and is coupled to the flywheel by means of a belt which does not slip at its contacting surfaces. A motor supplies a counterclockwise torque to the flywheel of M = (50t) lb. ft, where t is in seconds. (Figure 1) Part A Figure Determine the time required for the disk to attain...
Problem 19.25 The 30-lb flywheel A has a radius of gyration about its center of 4 in. Disk B weighs 65 lb and is coupled to the flywheel by means of a belt which does not slip at its contacting surfaces. A motor supplies a counterclockwise torque to the flywheel of M - (508) lb. ft, where t is in seconds. (Figure 1) Part A Determine the time required for the disk to attain an angular velocity of 90 rad/s...
Problem 1 Equilibrium of a Body in 2D (50pts) The ramp of a ship has a weight of 500 lb and a center of gravity G. An operator weighing 180 Ib is standing at point E, 4.5 ft from A, as shown. Determine the tension on the cable CD needed to just start lifting the ramp, i.e when the reaction at B becomes zero. Also, determine the horizontal and vertical components of force at the hinge at A. Show Free...
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