Figure Q2 illustrates a two-finger mechanical gripper. Assume that a mass of 10kg is to be grasped by the gripper based on friction, determine the necessary hydraulic cylinder actuation force, F, to carry the mass around with the gravitational force parallel to the contact surface. Note: a safety factor of 2.0 is desired to warrant secure gripping and transfer of the mass. Hydraulic Cylinder Actuation Force, F. 30mm Soft Pad with coefficient of friction, µ= 0.2 60mm Mass 10kg Activate Windows Go to Settings to activate Windo

Figure Q2 illustrates a two-finger mechanical gripper. Assume that a mass of 10kg is to be grasped by the gripper based on friction, determine the necessary hydraulic cylinder actuation force, F, to carry the mass around with the gravitational force parallel to the contact surface. Note: a safety factor of 2.0 is desired to warrant secure gripping and transfer of the mass. Hydraulic Cylinder Actuation Force, F. 30mm Soft Pad with coefficient of friction, µ= 0.2 60mm Mass 10kg Activate Windows Go to Settings to activate Windo

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 7.50P: The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the...

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c) The pulley system shown in Figure Q1c lifts a mass, m, of 550 kg. Calculate the force FAnecessary to maintain the suspended mass in static equilibrium; and determine the forces at the ceiling anchor points A and B. Assume frictionless and weightless pulleys and use g 9.81 m/s.
B r P F A UBC Engineering Your team is prototyping a simple braking system for your model car. The 3.4 kg wheel with a radius of r = rad 0.15 m is rotating at w = 18 - .A servo motor can apply a variable force F, which in its first two seconds of operation is equal to F = 10t N and afterwards is equivalent to a constant force of F = 20 N . If the coefficient of kinetic friction between the braking arm and the wheel is μ= 0.2, determine the time needed for the wheel to come to a full stop. The point of contact P between the wheel and the arm is a distance r = -0.2 + 0.26 ĵ m from point A. The force of the servo motor is applied at exactly half of the horizontal distance to A from the point of contact. Assume the wheel can be treated as a disk and that the braking arm is massless. t =
Clutch Mechanism 8. In the clutch mechanism shown, two flat circular disks of radius R are mounted so that they can be brought into contact causing a net frictional force. The contact pressure in general depends on the distance from the center and in one specific case may be modeled buy P(r) = Poe-kr, where k is a constant and r is the distance from the center of the discs. The integral cR F = 2m " P(r)rdr gives the total contact force between the discs. Cross-section a. In your own words explain where this formula comes from.
The pulley system shown in Figure Q1c lifts a mass,m,of 550 kg.Calculate the force FA necessary to maintain the suspended mass in static equilibrium; and determine the forces at the ceiling anchor points A and B. Assume frictionless and weightless pulleys and use g = 9.81 m/s2.
c) The pulley system shown in Figure Q1c lifts a mass, m, of 550 kg. Calculate the force FA necessary to maintain the suspended mass in static equilibrium; and determine the forces at the ceiling anchor points A and B. Assume frictionless
The system shown is in static equilibrium and motionless. • The force "P" is at the maximum magnitude that will not initiate motion. NOTE: Submitted responses shall be to 4 significant figures. Do NOT use scientific notation. Find: 1. The magnitude of weight of Block-A is 2. The magnitude of internal force in the rope is N. _N. 3. The magnitude of normal force between Block-A and Block-B is N. 4. The magnitude of friction force between Block-A and Block-B is N. 5. The magnitude of normal force between Block-B and the Ground is 6. The magnitude of friction force between Block-B and the Ground is 7. The magnitude of force P is_N. _N. N. A 100 kg 30° H, = 0.30 200 kg B P -Hy = 0.20
Open with Google Docs The homogeneous semicylinder rests on a horizontal surface and is subjected to the force P applied to a cord firmly attached to its periphery. The force P is slowly increased and kept normal to the flat surface of the semicylinder. If slipping is observed just as 0 reaches 40°, determine the coefficient of static fric- tion u, and the value of P when slipping occurs. B 3.
The car shown in the figure below has a mass of 1673 kg. The coefficient of static friction between the rubber tires and the pavement is 0.6. Determine the maximum incline e [degrees] that the car can drive up if it has rear-wheel drive. 0.85 m 1.2 m 1.7 m Answer: 18.87 Calculate the normal reaction force at the rear wheels for the condition of rear-wheel drive in N. Answer:
The figure shows a mechanism that raises packages in a transfer mechanism. A 200-N package sits on the horizontal output link O4BD while the crank O2A is rotating at constant speed of 287 rpm CCW. At the position shown the crank OA is vertical and the output link OB is horizontal. we need to determine the torque required from the motor at the crank O2A and the force in member AB The weights of the links are negligible. 50mm 450mm 200 N 200 mm B. 374 mm 300mm X The angular velocity of the link OĄBD in rad/s is = Choose... + The magnitude of the velocity of point D in m/s is = Choose... + The torque required from the motor at the crank O2A in N.m is = Choose... : The force in member AB in N is = Choose... +
(b) The 60° V-belt of a machine is pass around the pulley A of a motor and over a pulley B as shown in Figure Q2 (b). The motor exerts a torque of 7 Nm to drive the system. The coefficient of static friction for both pulley is 0.35 and both pulleys has an equivalent diameter. Calculate the tension of T;and T, of V-belt just before it start rotating. M A B Øg= 120 mm Ø= 120 mm Figure Q2 (b)
1. The PASCO human arm model is configured such that the cord representing the bicep is perfectly vertical and the forearm is at 90° (in the figure to the right, the cord is not quite vertical). A mass of 100 g is attached to the hand. Draw a free-body diagram on the figure to the right showing all forces which act on the forearm. The force of the bicep F on the arm The force of the humerus FH on the arm The weight of the forearm W The mass in the hand Wm 100 g Be careful to draw the force vectors with tails beginning at the point where the force is actually applied to the forearm. 2. Consider the free body diagram below. Determine the perpendicular component F̟ of the force F exerted by the biceps brachii on the forearm. Use the fact that cos 0 = H/B to write this component directly in terms of the humerus length H and the biceps length B. H 3. If the forearm is in equilibrium, then there is no angular acceleration and therefore the sum of the torques applied to the forearm must be…
For the problem related to Fundamental.6 sketches of the system showing: • the respective velocity and acceleration and the frame of reference considered • the forces acting on the system of considered, in other words, a free body diagram (FBD) are mandatory. Their absences will automatically make the problem false. The tractor is used to lift the 50-kg load B with the 27-m long rope, boom, and pulley system. The height h=4-m, SA=15m and sg=1.3m. SB B hm -SA If the tractor travels to the right with an acceleration of 3 m.s2. The maximum of tension of the allowable tension force in the rope is 3-kN. Determine the maximum of the allowable velocity of the tractor.