A block with mass of m, = 2 kg is placed on top of a block with a mass m2 = 4 kg. A horizontal force of F=60 N is applied to the block m2, and the block m, is tied to the wall. The coefficient of kinetic friction between all surfaces is 0.400. (a) Draw a free-body diagram for each block and identify the action-reaction forces between the blocks. (b) Determine the tension in the string and the magnitude of the acceleration of the block m2.

A block with mass of m, = 2 kg is placed on top of a block with a mass m2 = 4 kg. A horizontal force of F=60 N is applied to the block m2, and the block m, is tied to the wall. The coefficient of kinetic friction between all surfaces is 0.400. (a) Draw a free-body diagram for each block and identify the action-reaction forces between the blocks. (b) Determine the tension in the string and the magnitude of the acceleration of the block m2.

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 7.3P: Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair...

See similar textbooks

Similar questions

Two identical chairs, each weighing 14 lb, are stacked as shown. The center of gravity of each chair is denoted by G. The coefficient of static friction is 0.2 at B (the contact point between the chairs) and 0.35 at A, C, and D. Determine the smallest force P that would cause sliding.
Please answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. Block D, initially at rest, having a W = 30 lbf , is supported within the system shown, with x = 13.2 ft. Neglecting the mass of the pulley and the cord on the system, determine the eventual height h after a force P = 60 lbf is applied to make the block rise by ∆sD = 0.625 ft at t = 2.5 s. NOTE: Use Force-Mass-Acceleration (FMA) Method.
the system blocks shown below is in equilibrium, the weight of block A is 10 kN and for block B is 35 kN . The coefficient of friction between A and surface is 0.2 and between two block A and B is 0.15. Answer the following: The direction of friction force between two blocks which effect on block A is in * First Quarter Second Quarter Third Quarter Fourth Quarter The value of friction force between two blocks is * 5.6 kN 6.4 kN 4.8 kN Non above-mentioned The value of friction force between block A and its surface is * 4.0 kN 5.5 kN 6.2 kN Non above-mentioned The coefficient of friction between block B and surface is * 5 نقاط 0.24 0.63 0.56 0.37 The value of friction force between the block B and it's surface is * 25 kN 35 kN 15 kN Non above-mentioned The system is in * Equilibrium Impending to motion Kinematic
Three cylinders are piled in a rectangular ditch as shown, neglecting friction. Wa=15lb, Wb=40lb and Wc=20lb. Determine reaction between cylinder A and the floor, reaction between cylinder A and wall, reaction between cylinder A and cylinder B, reaction between cylinder B and cylinder C, reaction between cylinder B and the wall, and reaction between cylinder C and the wall.
.A belt 200 mm wide and 7 mm thick drives a pulley at belt speed of 25 m/s. The density of the belt is 980 kg/m3 and the coefficient of friction between the belt and pulley is 0.23. Given that the angle of contact of pulley is 2π/3 and the allowable stress of the belt is 1.8 MPa, determine the tension on the slack side of the belt (T2) in N
1) Jonny pulls his sister Jane (weight 28 lbs), who is sitting in a wagon, up an incline ramp (θ = 17°) with a steady speed. If the coefficient of kinetic friction is 0.18, the wagon has a mass of 14 kg, and the length of the ramp is 2.4 m, find: the work done by the frictional force. the work done by the gravitational force.
A = 1 kg, B = 2 kg, C= 200 kg, and the static of coefficient friction is equal to 0.04. Determine the normal force exerted by the horizontal plane to Block B (Nb). Find the force F required to start C moving upward (F).
A box of mass 20 kg moves up a rough plane which is inclined to the horizontal at 25.0o .It is pulled by a horizontal force F of magnitude 250N . The Coefficient of kinetic friction between thr box and the plane is 0.300 a) if the box travels 3.80 m along the plane determine i. The work done on the box by the force F ii. The work done on the box by gravitational force iii. The work done on the box by reaction force and the work done on the box by frictional force v. total work done on the box b) If the speed of box is zero at bottom plane ,calculate it speed when it travellef 3.80 m (given g=9.81m/s2)
A 20 kg block is held in place on an incline plane as shown by a rope that passesover a frictionless pulley at B and then over a fixed cylinder at C where thecoefficient between the rope and the fixed cylinder is 0.2. Given an angle ofincline, A = 25°, if a force of P = 200 V is applied to the end of the rope,(a) Will the block move if the coefficient of static friction between the block and theinclined surface is M, = 0.56?(b)If impending motion exists, will the block tip or slip?
A 2-m long concrete traffic barrier is used to provide safety for workers, pedestrians, and motorists during highway construction. The concrete has 0.024 N/cm3 specific weight. The interface between the barrier and pavement has static and kinetic coefficients of friction of 0.45 and 0.4, respectively, and h= 45 cm. Determine the force P that will cause motion of the barrier.
A 100 N force acts as shown on a 30.6 kg block placed on an inclined plane. The coefficients of friction between the block and the plane are µs = 0.25 and µk = 0.2. Determine whether the block is in equilibrium and find the value of the friction force.
Consider a floor crane operated by a driver which carries a drum as shown in figure. The total weight of floor crane and driver is 2700 kg acting at the point of center of gravity, G. mm; = 1 = Considering L1 = 14m, L2= 3 m L3 - 6 m, 14 = 2 m LS = 1 m; L6=7m 1. If the weight of the drum lifted by the floor crane is 800 kg, determine the total normal reaction on the rear wheels at A and total normal reaction on the front wheels at B when the boom is inclined at an angle of 25" with the horizontal, 2. Utilizing the same data given above for the same position of boom, determine the largest weight of the drum that can be lifted without causing the crane to overturn. (Hint: When the floor crane tends to overturn about point B, the wheel at A will leave the ground). Note: 1. Consider the entire system as coplanar 2. Take g 9.81 m/s wherever necessary = 9 Total normal reaction on the rear wheels at A= Total normal reaction on the front wheels at B= Largest weight of the drum=