In the given 15.0 meter slab and inclined 10°with the horizontal, the ends are resting on inclines of 30° incline at B and 20° at A, a semi-trailer truck is to pass through it with the wheel loads as shown. How Far (x, meters) shall be the front wheels located before motion impends, the angle of friction is 15° for all areas of contact. Neglect the weight of the slab. 15.00 m 24KN 40 KN 32 KN 16 KN 3.6 m 4.0 m 1.2m 20° 30° 10°

In the given 15.0 meter slab and inclined 10°with the horizontal, the ends are resting on inclines of 30° incline at B and 20° at A, a semi-trailer truck is to pass through it with the wheel loads as shown. How Far (x, meters) shall be the front wheels located before motion impends, the angle of friction is 15° for all areas of contact. Neglect the weight of the slab. 15.00 m 24KN 40 KN 32 KN 16 KN 3.6 m 4.0 m 1.2m 20° 30° 10°

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.49P

See similar textbooks

Similar questions

A uniform plank is supported by a fixed support at A and a drum at B that rotates clockwise. The coefficients of static and kinetic friction for the two points of contact are as shown. Determine whether the plank moves from the position shown if (a) the plank is placed in position before the drum is set in motion; and (b) the plank is first placed on the support at A and then lowered onto the drum, which is already rotating.
The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
The 60-lb plank rests on a frictionless roller at A, and the 20-lb triangular support BD. Both bodies are homogenous. The coefficients of static friction are 0.4 at B and 0.3 at D. Determine the largest force P that can be applied to the plank without initiating motion.
In the given 15.0 meter slab and inclined 10degrees with the horizontal, the ends are resting on inclines of 30degrees incline at B and 20degrees at A, a semi-trailer truck is to pass through it with the wheel loads as shown. How Far (x, meters) shall be the front wheels located before motion impends, the angle of friction is 15degrees for all areas of contact. Neglect the weight of the slab.
A garage door is mounted on an overhead rail. The wheels at A and B have rusted so that they do not roll, but rather slide along the track. The coefficient of kinetic friction is 0.55. The distance between the wheels is 2.00 m, and each is 0.50m from the vertical sides of the door. The door is uniform and weighs 850 N. It is pushed to the left at constant speed by a horizontal force F⃗, that is applied as shown in the figure. If the distance h is 1.60 m, what is the vertical component of the force exerted on the wheel A by the track? If the distance h is 1.60 m, what is the vertical component of the force exerted on the wheel B by the track? Find the maximum value hh can have without causing one wheel to leave the track.
The angle of static friction between the block with mass M and the plane is ∅ . Show that the minimum value of P for a given angle θ is 9.8M sin (θ + ∅).
A uniform slender bar AB with a mass of 20 kg and length of 3.6 m leans on a wall as shown. It is attached to a weightless small roller at end A on a smooth horizontal surface. The coefficient kinetic friction between end B and the wall is 0.25. If the bar is released from rest in the position shown when θ is 30°. Then find, determine the normal force at A. determine the normal force at B. determine the frictional force between end B and the wall.
A large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 710 kg and an average gear-tooth force of 2.75 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset x¯ of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers.Assume r = 140 mm, R = 515 mm, θ= 25°.
The uniform rod has a weight W and rests on a smooth peg at C and against a wall at A. The coefficients of friction at A and C are equal to μ = 0.3. Find the ratio L/a when motion is impending.
The rear-wheel-drive bakkie (pick-up), with its centre of gravity at G, is to negotiate a bump from a standing start in the position shown. The static and kinetic coefficients of friction between the tires and the pavement are 0.18 and 0.15 respectively. Determine the largest slope angle θ that can be negotiated assuming that the drive wheels are spinning.Determine the largest slope angle θ that can be negotiated assuming that the drive wheels are not spinning.Determine the largest slope angle θ that can be negotiated assuming that the bakkie has front-wheel drive and the drive wheels are spinning.Determine the largest slope angle θ that can be negotiated assuming that the bakkie has front-wheel drive and the drive wheels are not spinning.
A differential band brake is used to retard a shaft carrying flywheel weighing 3 kN with radius of gyration350 mm. If the brake drum diameter is 250 mm and coefficient of friction is 0.15, determine thefollowing: (i) the braking torque when an effort of 150 N is applied at the end of the lever, (ii) number ofrevolutions of the flywheel before it comes to rest, and (iii) time taken by the flywheel to come to rest.The drum rotates at 500 rpm in clockwise direction and the layout of the brake is as shown in figure.
Consider the system of two blocks. Thereis no friction between block A and the tabletop. The mass of block B is5.00 kg. The pulley rotates about a frictionless axle, and the light ropedoesn’t slip on the pulley surface. The pulley has radius 0.200 m andmoment of inertia 1.30 kg . m2. If the pulley is rotating with an angularspeed of 8.00 rad/s after the block has descended 1.20 m, what is themass of block A?