A boat of weight 580OON is winched steadily up a slipway inclined at 35° to the horizontal. The winching cable is parallel to the slipway and the coefficient of friction between the boat and the slipway is 0.36. Calculate the following: a) The component of the boat's weight which acts parallel to the slipway: b) The component of the boat's weight which acts normal to the slipway; c) The friction force acting on the boat; d) The force in the winching cable; e) The power required to winch the boat at a velocity is 0.54 m/s.

A boat of weight 580OON is winched steadily up a slipway inclined at 35° to the horizontal. The winching cable is parallel to the slipway and the coefficient of friction between the boat and the slipway is 0.36. Calculate the following: a) The component of the boat's weight which acts parallel to the slipway: b) The component of the boat's weight which acts normal to the slipway; c) The friction force acting on the boat; d) The force in the winching cable; e) The power required to winch the boat at a velocity is 0.54 m/s.

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 7.73P: The normal pressure acting on the disk of the sander is given by p=(4/3)+(r2/6), where p is the...

See similar textbooks

Similar questions

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.
The normal pressure acting on the disk of the sander is given by p=(4/3)+(r2/6), where p is the pressure in pounds per square inch (psi) and r represents the radial distance in inches. Determine the torque C required to operate the sander at constant speed if the kinetic coefficient of friction for the surface being sanded is 0.86.
A car weighing 13,000 N is driving at a speed of 50 km/h, overcoming a resistance (FD) of 450 N, as shown in Figure 3. If the coefficient of friction between a wheel and a road on a frozen pavement is 0.065, explain which case is good for maintaining speed, forward or backward wheel rolling, using reaction force and friction force.
A homogeneous ladder 20m long weighing 50 N is leaning against a wall makes an angle of 15 degrees with the wall. Assuming that the coefficient of friction at all contact surfaces is 0.20. What horizontal force (F) acting on the lower third point of the ladder will cause it to slip outward?
A 6.00 kg block is pressed against a vertical wall by a force. The coefficient of static friction between the block and wall is 0.41 and the directional angle theta for the force is 48 degrees. Determine the magnitude of the force when the block is about to slide down the wall.
a 200 kg box is on the platform of a weighing scale and is being pulled by a force of 70 kg acting at 43° above the horizontal. between the box and the platform the coefficient of friction is 0.36 . (A) How much will the scale register? (B) Will the box remain on the platform or slide?
Two identical pulleys with diameter of 711 mm, are mounted on two parallel shafts for flat belt drive system. The maximum permissible tension in the belt is 2,691 N and the coefficient of friction between belt and pulley is 0.31. The centrifugal tension acting on the belt is 887 N. Calculate the power that can be transferred in Watts if the rotational speed of the driving pulley is 978 r.p.m.
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?
A bicycle and rider, travelling at 12 km/hr on a level road, have a mass of 105 kg. A brake is applied to the rear wheel, which is 800 mm in diameter. The pressure force on the brake is 80 N and the coefficient of friction is 0.06. Find the distance covered by the bicycle and the number of turns of its wheel before coming to rest.
A box rests on a horizontal plane. The plane is slowly tilted so that the angle between the surface and the horizontal increases to 20 degrees, at which point the box begins to slip. what is the coefficient of static friction between the box and the surface to 2 s.f.?
A dictionary is pulled to the right at constant velocity by a 10 N force acting 30° upward above the horizontal. The coefficient of kinetic friction between the book and the horizontal surface is 0.5. What is the weight of the book?
The maximum static friction for a material in contact with a rough surface 2 is 10kN. Determine the minimum force that would make an impending motion to the material.