PEARSON ETEXT ENGINEERING MECH & STATS
15th Edition
ISBN: 9780137514724
Author: HIBBELER
Publisher: PEARSON
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The 0.6-lb particle is guided along the circular path using the
slotted arm guide. Motion occurs in the horizontal plane with
negligible friction. Note that the circular part of the slot has the
radius equal to 0.5 ft, and the radial position, r, is measured from
the hinge and the angle is measured in the counter-clockwise
direction. If the arm has an angular velocity = 4 rad/sec and
an angular acceleration 6 - 8 rad/sec² at the instant when 0 =
30°, determine the force of the arm guide on the particle at the
instant. Present your answer in lb using 3 significant figures.
0.5 ft
0
0.5 ft.
The 16-Mg truck hauls the 37-Mg trailer. If the unit starts from rest on a level road with a tractive force of 21 kN between the
driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig.
Answers:
T =
a =
i
37 Mg
KN
m/s²
16 Mg
Determine the force acting on the cylinder at t = 3 s.
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- At the instant shown the 40 kg block A is moving down the plane, while being attached to the 8 kg block B. If the coefficient of kinetic friction between the block and the incline and other surface is µs = 0.2 and µx = 0.15, determine the acceleration of block B, and the tension in the cord. Neglect the mass of the pulleys and cables.arrow_forwardNonearrow_forwardThe 1.8-kg slider fits loosely in the smooth slot of the disk, which rotates about a vertical axis through point O. The slider is free to move slightly along the slot before one of the wires becomes taut. If the disk starts from rest at time t = 0 and has a constant clockwise angular acceleration of 0.48 rad/s², plot the tensions in wires 1 and 2 and the magnitude N of the force normal to the slot as functions of time t for the interval Ost≤4.1s. After you have made the plots, answer the questions. Questions: When t = 0.6 S: When t = 3.3 S: T₁ = i T₁= i 120 mm N.T2= N.T2= i N.N= N,N= i i N Narrow_forward
- The car has a mass of 2000kg. Determine the shortest time it takes for it to reach a speed of 90 km/hr, starting from rest, if the engine drives the front wheels, whereas the rear wheels are free rolling. The coefficient of friction between the wheels and road is s=0.4, k=0.3. Neglect the mass of the wheels. What are the reactions at the front and rear wheels while the car is acceleratingarrow_forwardThe 19-Mg truck hauls the 41-Mg trailer. If the unit starts from rest on a level road with a tractive force of 22 kN between the driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig. 41 Mg 19 Mg Answers: T= i kN i m/s2 a =arrow_forwardNonearrow_forward
- The 300-kg bar B, originally at rest, is being towed over a series of small rollers. Determine the force in the cable when t = 5s, if the motor M is drawing in the cable for a short time at a rate of v = (0.47²) m/s, where t is in seconds (0 <= t<= 6 s). How far does the bar move in 5s? Neglect the mass of the cable, pulley, and the rollers. M Barrow_forwardThe slotted arm OA rotates about a fixed axis through O. At the instant under consideration, 0 = 34°, 0 = 43 deg/s, and 0 = 28 deg/s². Determine the magnited of the force F applied by arm OA and the magnitude of the force N applied by the sides of the slot to the 0.6-kg slider B. Neglect all friction, and let L = 0.75 m. The motion occurs in a vertical plane. Part 1 -L B Answer: ay = i m Slider B moves only vertically (the y-direction). Find the acceleration (positive if up, negative if down). B m y m/s²arrow_forwardThe 10-Mg (10,000 kg) truck hauls the 20-Mg (20,000 kg) trailer. If the unit starts from rest on a level road with a tractive force of 2A kN between the driving wheels of the truck and the road, compute the acceleration a of the truck-trailer system and the tension T in the horizontal drawbar. Neglect friction. A is the last digit of your student number replacing any 0 with 10. For example, if your student number is 400027581 then A = 1, if your student number is 400027580 then A = 10, etc.arrow_forward
- Q2/ The 1-kg slider starts from rest at position 1 and it moves up the incline under the action of constant force P = 55 N cause the slider to have a speed v2 = 0.5 m/s at position 2. Neglect friction, and determine the spring constant k. Take the angle 0 = 18°. 200 mm 200 mm 250 mm 250 mmarrow_forwardThe 19-Mg truck hauls the 40-Mg trailer. If the unit starts from rest on a level road with a tractive force of 23 kN between the driving wheels of the truck and the road, compute the tension T in the horizontal drawbar and the acceleration a of the rig.arrow_forwardWhen s = 55 cm, the spring is unstretched and the 9-kg block has a speed of 6.19 m/s down the smooth plane. If the coefficient of kinetic friction between the surface and the block is 0.25, find the distance (mm) s at which the block stops. k = 208 N/m 6.19 m/s F = 118 N 30arrow_forward
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