Loose Leaf for Vector Mechanics for Engineers: Statics and Dynamics
12th Edition
ISBN: 9781259977206
Author: BEER, Ferdinand P., Johnston Jr., E. Russell, Mazurek, David, Cornwell, Phillip J., SELF, Brian
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 8.1, Problem 8.10P
(a)
To determine
Find the magnitude and direction of the smallest force P required for the block moving up the rail.
(c)
To determine
Find the magnitude and direction of the smallest force P required for the block to prevent it from moving down.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 20 kg block is held in place on an incline plane as shown by a rope that passes
over a frictionless pulley at B and then over a fixed cylinder at C where the
coefficient between the rope and the fixed cylinder is 0.2. Given an angle of
incline, 0 = 25°, if a force of P = 200 N is applied to the end of the rope,
(a) Will the block move if the coefficient of static friction between the block and the
inclined surface is μ = 0.56?
(b)lf impending motion exists, will the block tip or slip?
Enter the magnitude of force in the rope that will cause tipping of the block
as the answer in the Respondus answer-box.
0.4 m
0.8 m
Ө
MA
0.5 m
C
B
P
A 20 kg block is held in place on an incline plane as shown by a rope that passes
over a frictionless pulley at B and then over a fixed cylinder at C where the
coefficient between the rope and the fixed cylinder is 0.2. Given an angle of
incline, 0 = 25°, if a force of P = 200 N is applied to the end of the rope,
(a) Will the block move if the coefficient of static friction between the block and the
inclined surface is μ = 0.56?
(b)lf impending motion exists, will the block tip or slip?
Enter the magnitude of force in the rope that will cause tipping of the block
as the answer in the Respondus answer-box.
0.4 m
0.8 m
MA
0.5 m
C
B
P
Two blocks A and B weighing 3 kN and 15 kN, respectively, are held in position against an inclined plane by applying a horizontal force P as shown in Fig. Find the least value of P which will induce motion of the block A upwards. Angle of friction for all contact surfaces is 12°.7.
Chapter 8 Solutions
Loose Leaf for Vector Mechanics for Engineers: Statics and Dynamics
Ch. 8.1 - Knowing that the coefficient of friction between...Ch. 8.1 - Two blocks A and B are connected by a cable as...Ch. 8.1 - A cord is attached to and partially wound around a...Ch. 8.1 - A 40-kg packing crate must be moved to the left...Ch. 8.1 - Determine whether the block shown is in...Ch. 8.1 - Determine whether the block shown is in...Ch. 8.1 - Determine whether the block shown is in...Ch. 8.1 - Determine whether the block shown is in...Ch. 8.1 - Knowing that = 45 in Prob. 8.1, determine the...Ch. 8.1 - The 20-lb block A hangs from a cable as shown....
Ch. 8.1 - The 10-kg block is attached to link AB and rests...Ch. 8.1 - Considering only values of less than 90,...Ch. 8.1 - Prob. 8.9PCh. 8.1 - Prob. 8.10PCh. 8.1 - The 50-lb block A and the 25-lb block B are...Ch. 8.1 - The 50-lb block A and the 25-lb block B are...Ch. 8.1 - Three 4-kg packages A, B, and C are placed on a...Ch. 8.1 - Prob. 8.14PCh. 8.1 - A uniform crate with a mass of 30 kg must be moved...Ch. 8.1 - A worker slowly moves a 50-kg crate to the left...Ch. 8.1 - Prob. 8.17PCh. 8.1 - A 200-lb sliding door is mounted on a horizontal...Ch. 8.1 - Prob. 8.19PCh. 8.1 - Prob. 8.20PCh. 8.1 - Prob. 8.21PCh. 8.1 - Prob. 8.22PCh. 8.1 - The 10-lb uniform rod AB is held in the position...Ch. 8.1 - Prob. 8.24PCh. 8.1 - Prob. 8.25PCh. 8.1 - Prob. 8.26PCh. 8.1 - The press shown is used to emboss a small seal at...Ch. 8.1 - The machine base shown has a mass of 75 kg and is...Ch. 8.1 - Prob. 8.29PCh. 8.1 - Prob. 8.30PCh. 8.1 - Prob. 8.31PCh. 8.1 - Prob. 8.32PCh. 8.1 - Prob. 8.33PCh. 8.1 - A driver starts the engine of an automobile that...Ch. 8.1 - Prob. 8.35PCh. 8.1 - Two uniform rods each of weight W and length L are...Ch. 8.1 - A 1.2-m plank with a mass of 3 kg rests on two...Ch. 8.1 - Two identical uniform boards, each with a weight...Ch. 8.1 - A uniform 20-kg tube resting on a loading dock...Ch. 8.1 - Prob. 8.40PCh. 8.1 - A 10-ft beam, weighing 1200 lb, is to be moved to...Ch. 8.1 - (a) Show that the beam of Prob. 8.41 cannot be...Ch. 8.1 - Two 8-kg blocks A and B resting on shelves are...Ch. 8.1 - Prob. 8.44PCh. 8.1 - Prob. 8.45PCh. 8.1 - Two slender rods of negligible weight are...Ch. 8.1 - Two slender rods of negligible weight are...Ch. 8.2 - The machine part ABC is supported by a...Ch. 8.2 - Prob. 8.49PCh. 8.2 - Prob. 8.50PCh. 8.2 - Prob. 8.51PCh. 8.2 - Prob. 8.52PCh. 8.2 - Solve Prob. 8.52 assuming that the end of the beam...Ch. 8.2 - Prob. 8.54PCh. 8.2 - Prob. 8.55PCh. 8.2 - Block A supports a pipe column and rests as shown...Ch. 8.2 - A 200-lb block rests as shown on a wedge of...Ch. 8.2 - Prob. 8.58PCh. 8.2 - Prob. 8.59PCh. 8.2 - Prob. 8.60PCh. 8.2 - Prob. 8.61PCh. 8.2 - An 8 wedge is to be forced under a machine base at...Ch. 8.2 - Prob. 8.63PCh. 8.2 - A 15 wedge is forced under a 50-kg pipe as shown....Ch. 8.2 - A 15 wedge is forced under a 50-kg pipe as shown....Ch. 8.2 - Prob. 8.66PCh. 8.2 - Prob. 8.67PCh. 8.2 - Prob. 8.68PCh. 8.2 - Prob. 8.69PCh. 8.2 - Prob. 8.70PCh. 8.2 - Prob. 8.71PCh. 8.2 - The position of the automobile jack shown is...Ch. 8.2 - Prob. 8.73PCh. 8.2 - Prob. 8.74PCh. 8.2 - In the vise shown, the screw is single-threaded in...Ch. 8.2 - Prob. 8.76PCh. 8.3 - A lever of negligible weight is loosely fitted...Ch. 8.3 - Prob. 8.78PCh. 8.3 - 8.79 and 8.80 The double pulley shown is attached...Ch. 8.3 - Prob. 8.80PCh. 8.3 - 8.81 and 8.82 The double pulley shown is attached...Ch. 8.3 - Prob. 8.82PCh. 8.3 - Prob. 8.83PCh. 8.3 - The block and tackle shown are used to lower a...Ch. 8.3 - Prob. 8.85PCh. 8.3 - Prob. 8.86PCh. 8.3 - Prob. 8.87PCh. 8.3 - 8.87 and 8.88 A lever AB of negligible weight is...Ch. 8.3 - Prob. 8.89PCh. 8.3 - Prob. 8.90PCh. 8.3 - Prob. 8.91PCh. 8.3 - Prob. 8.92PCh. 8.3 - Prob. 8.93PCh. 8.3 - Prob. 8.94PCh. 8.3 - Prob. 8.95PCh. 8.3 - Prob. 8.96PCh. 8.3 - Solve Prob. 8.93 assuming that the normal force...Ch. 8.3 - Prob. 8.98PCh. 8.3 - Prob. 8.99PCh. 8.3 - A 900-kg machine base is rolled along a concrete...Ch. 8.3 - Prob. 8.101PCh. 8.3 - Prob. 8.102PCh. 8.4 - A rope having a weight per unit length of 0.4...Ch. 8.4 - A hawser is wrapped two full turns around a...Ch. 8.4 - Two cylinders are connected by a rope that passes...Ch. 8.4 - Prob. 8.106PCh. 8.4 - The coefficient of static friction between block B...Ch. 8.4 - Prob. 8.108PCh. 8.4 - A band belt is used to control the speed of a...Ch. 8.4 - Prob. 8.110PCh. 8.4 - The setup shown is used to measure the output of a...Ch. 8.4 - A flat belt is used to transmit a couple from drum...Ch. 8.4 - Prob. 8.113PCh. 8.4 - Prob. 8.114PCh. 8.4 - The speed of the brake drum shown is controlled by...Ch. 8.4 - The speed of the brake drum shown is controlled by...Ch. 8.4 - Prob. 8.117PCh. 8.4 - Bucket A and block C are connected by a cable that...Ch. 8.4 - Prob. 8.119PCh. 8.4 - Prob. 8.120PCh. 8.4 - 8.121 and 8.123 A cable is placed around three...Ch. 8.4 - Prob. 8.122PCh. 8.4 - Prob. 8.123PCh. 8.4 - Prob. 8.124PCh. 8.4 - Prob. 8.125PCh. 8.4 - Prob. 8.126PCh. 8.4 - The axle of the pulley is frozen and cannot rotate...Ch. 8.4 - The 10-lb bar AE is suspended by a cable that...Ch. 8.4 - Prob. 8.129PCh. 8.4 - Prove that Eqs. (8.13) and (8.14) are valid for...Ch. 8.4 - Complete the derivation of Eq. (8.15), which...Ch. 8.4 - Prob. 8.132PCh. 8.4 - Solve Prob. 8.113 assuming that the flat belt and...Ch. 8 - 8.134 and 8.135 The coefficients of friction are S...Ch. 8 - Prob. 8.135RPCh. 8 - Prob. 8.136RPCh. 8 - A slender rod with a length of L is lodged between...Ch. 8 - The hydraulic cylinder shown exerts a force of 3...Ch. 8 - Prob. 8.139RPCh. 8 - Bar AB is attached to collars that can slide on...Ch. 8 - Two 10 wedges of negligible weight are used to...Ch. 8 - A 10 wedge is used to split a section of a log....Ch. 8 - Prob. 8.143RPCh. 8 - A lever of negligible weight is loosely fitted...Ch. 8 - In the pivoted motor mount shown, the weight W of...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- 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?arrow_forward1.6 m A 360 mm 8.75 A hot-metal ladle and its contents have a mass of 50 Mg. Know- ing that the coefficient of static friction between the hooks and the pinion is 0.30, determine the tension in cable AB required to start tipping the ladle. В Fig. P8.75arrow_forwardA 150lb man stands on a 60lb bar to which a cable is fixed at B. The cable passes over two fixed pegs with coefficients of friction indicated. Assume that the arrangement of the pegs permits the cable to contact each peg over a total angle of 90-degrees (90-degrees per peg). Assume that the normal force exerted by the man on the bar acts downward through A. Find the largest force the man can exert on the cable and maintain the bar horizontal.arrow_forward
- PROBLEM 2: Two blocks shown are connected by a cord and rests on horizontal planes. If the coefficient of friction for the 200 N block is 0.20 and for the 300 N block is 0.30, determine the magnitude and direction of the least force P that will cause impending motion. P Ө 200N 45° 300Narrow_forwardPlease solve the question in handwriting step by step.arrow_forward2. Block A is attached to a weight B via a cable over a frictionless pulley. The weight of block A is 300 lb. and the weight of B is 150 lb. The force P = 40 lb., is applied to block A. The coefficients of friction are: µs = 0.35 and l = 0.25. Determine: a) the magnitude and direction of the friction force, F, acting on block A, b) does block A move? If yes, in which direction? Ans: a) F = 52.5 lbN ÷, b) block moves → A P 4 Barrow_forward
- The foot of a uniform ladder, of length 2a and weight W, rests on rough horizontal ground and the top of the ladder rests against a smooth vertical wall, The ladder makes an angle of 60° with the horizontal. A man of weight 4W climbs up the ladder. Given that the ladder begins to slip when the man has climbed two-thirds of the way up the ladder, find (a) the coefficient of friction between the ladder and the ground, (b) how far a boy of weight 2W can climb up the ladder before it slips.arrow_forward• Draw a free body diagram of the box on the incline. . Determine the weight (W) of the box on the incline surface. Determine the normal force (N) acting on the inclined box. Determine the friction force (F) acting on the inclined box. ● 7. A box of unknown weight is being pulled on a = 39 degree inclined surface by a frictionless pully system attached to a 540 pound box hanging off the pully. The coefficient of static friction between the box and the inclined surface is μ = 0.33 and both boxes are not moving. Answer the questions below: ● W= N = Ff= 0 W lbs lbs lbs 540 lbsarrow_forwardThe four-wheel drive vehicle of weight W attempts to climb a verticalobstruction at A. The center of gravity of the vehicle is at G, and the coefficientof static friction is µs at A and B. Find the smallest µs necessary to initiate theclimb. (Hint: Slipping must impend at A and B simultaneously.)arrow_forward
- A homogeneous box with a height of 35 cm and width of 20 cm is resting on a rough surface. The coefficient of friction between the box and the surface is 0.35. If a force P is applied at point C and is increased slowly, determine if the box will slide or fall over first. Indicate the value of P at which the box will slide and fall over. (Hint: At the time that the box will start to fall over, the reaction at point A will be equal to zero.)arrow_forward3.) Uniform box A has a weight of 40 Ib, and is leaning against box B as shown. Box B has a weight of WB. Friction coefficients between the various 20 in. (friction-less) X = 24 in. Y = 10 in. 30 deg. surfaces are as shown. 24 in. W = 40 Ib u-0.7 H= 0.4 a. Draw FBD's of box A and box B. b. Determine if the system is in static equilibrium. Note – Only check for sliding of A and B. Narrow_forwardProblem 4.15 As illustrated in Fig. 4.62, consider a simple traction device applied to the leg of a patient such that the cable of the pulley makes an angle a = 35° with the hori- zontal. The leg is in a cast and the coefficient of friction between the cast and the bed is µ = 0.45. The weight of the leg is W = 180 N. Determine the tension in the cable. Answer: T = 75 N yarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L
International Edition---engineering Mechanics: St...
Mechanical Engineering
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:CENGAGE L
Differences between Temporary Joining and Permanent Joining.; Author: Academic Gain Tutorials;https://www.youtube.com/watch?v=PTr8QZhgXyg;License: Standard Youtube License