18) To push a 25 kg wooden box up a 30O inclined plane, a man exerts a force of 150 N parallel to the inclined plane. The wooden box slides 5 meters and the coefficient of friction between the wooden box and the inclined plane is 0.25 i) Draw the clear and neat figure of the system. ii) Draw the Force diagram. iii) Establish the convenient axis and reflect the component of the forces along the axis.

18) To push a 25 kg wooden box up a 30O inclined plane, a man exerts a force of 150 N parallel to the inclined plane. The wooden box slides 5 meters and the coefficient of friction between the wooden box and the inclined plane is 0.25 i) Draw the clear and neat figure of the system. ii) Draw the Force diagram. iii) Establish the convenient axis and reflect the component of the forces along the axis.

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 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

See similar textbooks

Similar questions

Consider a ball rolling around in a circular path on the inner surface of a cone. The weight of the ball is shown by the vector W. Without friction, only one other force acts on the ball—a normal force, (a) Draw in the vector for the normal force. (The length of the vector depends on the next step, b.) (b) Using the parallelogram rule, show that the resultant of the two vectors is along the radial direction of the ball’s circular path. (Yes, the normal is appreciably larger than the weight!)
A box slides from rest from point A down a plane inclined 30 degrees to the horizontal. After reaching the bottom of the plane, the box moves on the horizontal floor at a distance of 2 m before coming to rest. If the coefficient of friction between the box and plane and between the box and floor is 0.40, what is the distance of point A from the intersection of the plane and the floor?
The expression: "If the vector sum of the external forces on a system is zero, the total linear motion of the system ..." Complete the sentence with the best option that completes the expression: a) It is constant and the utility lies in that it does not depend on the detailed nature of the internal forces acting between the members of the system. b) It is constant and the utility lies in that it depends on the detailed nature of the internal forces acting between the members of the system. c) It is not constant and the utility lies in that it depends on the detailed nature of the external forces acting between the members of the system. d) It is not constant and the usefulness is that it does not depend on the detailed nature of the external forces acting between the members of the system.
A block is being pushed on a flat surface of magnitude 45N. The force of friction on the brick is 13 N. that mass of the block is 11kg. A draw a free body diagram B what is the net force acting on the block C what is the acceleration of the block?
An empty 6-in. diameter dust fall jar weighs 1560 g. After sitting outside for the prescribed amount of time, the jar weighs 1570 g. Report the dust falls in the usual manner. handwritten
The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.
(II) A 25.0-kg box is released on a 27° incline and accelerates down the incline 0.30 m/s2at Find the friction force impeding its motion. What is the coefficient of kinetic friction?
A uniform ladder 18 ft long and weighing 120 lbs rests against a smooth wall. The angle between the ladder and the ground is 70°. The coefficient of friction between the ground and the ladder is 0.25. How far up the ladder can a 180 lb man walk before the ladder slips?
A child goes down a playground slide that is inclined at an angle of 24.5°below the horizontal. Find the acceleration of the child given that the coefficient of kinetic friction between the child and the slide is 0.375
consider the mass and pulley system in the attached file. mass m1 = 29 kg and mass m2 = 12kg. the angle of the inclined plane is given and the coefficient of kinetic friction between mass m2 and the inclined plane is uk = 0.12. assume the pulleys are massless and frictionless when mass m2 moves a distance 4.94 m up the ramp, how far downward does mass m1 move? d= ?
A 20-kg block is pulled by a horizontal force F. When the applied force is 30 N the block starts to slide. Find the normal force N and the coefficient of static friction (μs).
30.A block is started from rest at the top of an inclined plane 6 meters long which makes45 degrees with the horizontal. The coefficient of friction between the block and theplane is 0.20. At the foot of the plane, the block continues to move along a horizontalsurface. If the coefficient of friction between the block and the horizontal surface is0.15, how far does the block go along the horizontal surface?