International Edition---engineering Mechanics: Statics, 4th Edition
4th Edition
ISBN: 9781305501607
Author: Andrew Pytel And Jaan Kiusalaas
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 7, Problem 7.61P
To determine
The maximum safe value of P and the corresponding braking torque acting on the drum if the drum is rotting counter-clockwise.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
Q4. As shown in the image below, a force of P= 310 N is applied to the 64-kg cart.
The dimensions are a = 0.29 m, b = 0.21 m, and c = 0.28 m, and the angle 0 = 26.
The mass center of the cart is at point G. Assume the wheels are weightless and free
to roll (therefore, friction can be ignored). Take g = 9.81 m/s?.
(1) Determine the total normal force at the wheels at A. A FBD and kinetic diagram
must be included on your notes. Your answer must include 1 place after the decimal
point, and the proper SI unit.
P
0.4 m
C
В
0.08 m
4. Draw the FBD and derive the EOM of the pulley system below with respect to x using Newton's
laws. Mass m slides on a rough surface with friction force f. There is no displacement in the
spring initially.
-Pulley.
moment of
inertia J,
A single cylinder reciprocating engine has speeded 300 RPM. Stroke 250 mm, mass of reciprocating parts 50 kg. Mass of revolving parts at 150 mm radius 37 kg. If two fourth of the reciprocating parts and all the revolving parts are to be balanced, find
(i) The balance mass required at 400 mm radius
(ii) The residual unbalanced force when the crank has rotated 45° TDC.
Chapter 7 Solutions
International Edition---engineering Mechanics: Statics, 4th Edition
Ch. 7 - Can the two blocks be in equilibrium in the...Ch. 7 - Determine the range of P for which the system of...Ch. 7 - Two identical chairs, each weighing 14 lb, are...Ch. 7 - The two homogeneous bars AB and BC are connected...Ch. 7 - The contact surface between the 36-lb block and...Ch. 7 - The uniform bar AB of weight W is leaning against...Ch. 7 - The center of gravity of the 50-kg spool is at G....Ch. 7 - The brake pads at C and D are pressed against the...Ch. 7 - The 200-lb homogenous cylinder of radius R is...Ch. 7 - The rear-wheel-drive pickup truck, with its center...
Ch. 7 - Solve Prob. 7.10 assuming that the pick-up truck...Ch. 7 - The 2-lb bar is pinned at A and rests on the 4-lb...Ch. 7 - The horizontal force P acts on the rim of the...Ch. 7 - The uniform bar and the homogeneous cylinder each...Ch. 7 - A stepladder consisting of two legs pinned...Ch. 7 - The mass of the unbalanced disk is m, and its...Ch. 7 - The two uniform sheets of plywood, each of length...Ch. 7 - Find the largest value of b/h at which the folding...Ch. 7 - The 3600-lb car with rear Wheel drive is...Ch. 7 - The 3600-lb car with rear wheel drive is...Ch. 7 - The man is trying to push the homogeneous 20-kg...Ch. 7 - A 1.1-kg disk A is placed on the inclined surface....Ch. 7 - The 40-lb spool is suspended from the hanger GA...Ch. 7 - A uniform plank is supported by a fixed support at...Ch. 7 - The uniform bar of weight W is supported by a...Ch. 7 - The uniform plank is initially at rest on the...Ch. 7 - The two homogeneous bars with the weights shown...Ch. 7 - The man pushes the 120-lb homogeneous crate with...Ch. 7 - The 80-kg crate has its center of gravity at G....Ch. 7 - Solve Prob. 7.29 if =0.Ch. 7 - The 120-lb door with its center of gravity at G is...Ch. 7 - Determine the largest force P for which the 16-kg...Ch. 7 - Determine the largest angle for which the...Ch. 7 - The cylinder and the block are connected by a...Ch. 7 - The weight of the cylindrical tank is negligible...Ch. 7 - The coeffient of static friction between the...Ch. 7 - The two homogenous boxes are stacked vertically....Ch. 7 - Two concrete blocks weighing 320 lb each form part...Ch. 7 - Derive the expression for the largest angle ? for...Ch. 7 - The 60-lb plank rests on a frictionless roller at...Ch. 7 - The 2000-lb weight of the trailer is distributed...Ch. 7 - Determine the smallest force P, applied to the...Ch. 7 - The homogenous cylinder of weight W is at rest...Ch. 7 - The uniform bar of length L and weight W is kept...Ch. 7 - The movable bracket of negligible weight is...Ch. 7 - The 200-lb man walks up the inclined plank of...Ch. 7 - Determine the smallest coefficient of static...Ch. 7 - Find the smallest distance d for which the hook...Ch. 7 - Prob. 7.49PCh. 7 - The block of weight W is pulled by the force P...Ch. 7 - The two 200-lb blocks are pushed apart by the 15...Ch. 7 - Determine the smallest horizontal force P that...Ch. 7 - The device shown is used to measure the kinetic...Ch. 7 - The single-threaded screw of the floor jack has a...Ch. 7 - A wedge is used to prop up the 6000-lb block of...Ch. 7 - The square-threaded screw 0f the C-clamp has a...Ch. 7 - The square-threaded screw with a pitch of 10 mm...Ch. 7 - The screw of the carjack has a pitch of 0.1 in....Ch. 7 - How many turns of rope around the capstan are...Ch. 7 - The force P applied to the brake handle enables...Ch. 7 - Prob. 7.61PCh. 7 - The 120-kg block A is suspended from a rope that...Ch. 7 - The leather rein used to fasten the horse to the...Ch. 7 - The 30-lb weight is attached to a rope that runs...Ch. 7 - The rail AB of negligible weight is suspended from...Ch. 7 - The blocks A and B of weights WA and WB are joined...Ch. 7 - The 150-lb weight is attached to a rope that...Ch. 7 - The 50-lb homogeneous bar AB is suspended from a...Ch. 7 - The collar bearing carries the axial load P = 400...Ch. 7 - Solve Sample Problem 7.16 if the contact pressure...Ch. 7 - The 600-lb cable spool is placed on a frictionless...Ch. 7 - Prob. 7.72PCh. 7 - The normal pressure acting on the disk of the...Ch. 7 - Prob. 7.74PCh. 7 - The single-plate clutch transmits the torque C...Ch. 7 - The clutch described in Prob. 7.75 is to transmit...Ch. 7 - The cone clutch transmits the torque C through a...Ch. 7 - The figure shows a steel bar being processed by a...Ch. 7 - The coefficient of rolling resistance between the...Ch. 7 - Prob. 7.80PCh. 7 - Calculate the horizontal force P required to push...Ch. 7 - The uniform pole BC of length L and weight W is...Ch. 7 - The homogeneous bar AB of weight W and length L is...Ch. 7 - Find the smallest angle for which the uniform...Ch. 7 - Prob. 7.85RPCh. 7 - Determine the largest angle for which the uniform...Ch. 7 - Can the uniform bar of weight W remain at rest in...Ch. 7 - The panel of weight W with its center of gravity...Ch. 7 - The woman is trying to move the crate of weight W...Ch. 7 - The screw of the clamp has a square thread of...Ch. 7 - Find the largest clockwise couple C that can be...Ch. 7 - The test specimen AB is placed in the grip of a...Ch. 7 - The coefficient of static friction between the...Ch. 7 - The uniform bars AB and BC are connected with a...
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 large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 740 kg and an average gear-tooth force of 2.60 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset X of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers. Assumer = 110 mm, R= 695 mm, 0 = 24° Detail of contact at B Answer: X mmarrow_forwardThe drum shown in Fig. (a) has a radius of gyration of 30 cm and weights 1,8 kN. It is supported by means of small hubs which rest in bearings. A weight of 1 kN is attached to one end of a rope, the other end being wrapped around the drum. Neglecting friction in the bearings, determine the acceleration of the weight, the angular acceleration of the drum, and the tension in the rope. 37.5 cm 1.8kN T IkNarrow_forwardA large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 780 kg and an average gear-tooth force of 2.20 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset T of the center of mass Gof the sand from the vertical centerline. Neglect all friction in the supporting rollers. Assume r = 140 mm, R = 680 mm, 0 = 18°. Detail of contact at B B •G Answer:T= mmarrow_forward
- I need the answer as soon as possiblearrow_forwardAE 3-10 ) please SolVE itarrow_forwardA large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 710 kg and an average gear-tooth force of 2.75 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset x¯ of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers.Assume r = 140 mm, R = 515 mm, θ= 25°.arrow_forward
- (Meriam and Kraige 6th ed. 6/89) The spool (ro = 0.2 m, ri = 0.075 m) has a mass of 25 kg and radius of gyration kg = 175 mm. Constant force Tis applied at an angle 0 to a cord securely wrapped around the inner radius as T то TI G shown. If T = 50 N, 0 = 30°, and friction coefficients with the ground surface u, = 0.10 and uk = 0.08, find the angular acceleration of the disk, the acceleration of its center of mass G, and the friction force which the surface exerts on the spool. Assume that the spool is initially at rest. (Answers: 0.3 rad/s [CCW], 1.0 m/s [ ] 18 N[-])arrow_forwardA shaft carries four masses A, B, C and D of magnitude 10 kg, 20 kg, 15 kg and 25 kg respectively and revolving at radii 100 mm, 50 mm, 80 mm and 120mm in planes measured from A at 100 mm, 300 mm and 500 mm. The angles between the cranks measured anticlockwise are A to B = 40°, B to C = 50° and C to D = 150°. The balancing masses are to be placed in planes X and Y. The distance between the planes A and X is 50 mm, between X and Y is 350 mm. If the balancing masses revolve at a radius of 50 mm, find the magnitude for mass on plane X (consider plane X as the refernce plane).arrow_forwardDo not give answer in image and hand writingarrow_forward
- A shaft carries four masses A, B, C and D of magnitude 10 kg, 20 kg, 15 kg and 25 kg respectively and revolving at radii 100 mm, 50mm, 80 mm and 120mm in planes measured from A at 100 mm, 300 mm and 500 mm.The angles between the cranks measured anticlockwise are A to B = 40°, B to C = 50° and C to D = 150°.The balancing masses are to be placed in planes X and Y. The distance between the planes A and X is 50 mm, between X and Y is 350mm.If the balancing masses revolve at a radius of 50 mm, find the magnitude for mass on plane X (consider plane X as the refernce plane).Select one:A.78.8 kgB.68.8 kgC.98.8 kgD.48.8 kg For the data given in Question 4, find the magnitude for mass on plane Y (consider plane X as the reference plane).Select one:A.59.1 kgB.69.1 kgC.99.1 kg D.49.1 kgarrow_forwardA large symmetrical drum for drying sand is operated by the geared motor drive shown. If the mass of the sand is 640 kg and an average gear-tooth force of 2.55 kN is supplied by the motor pinion A to the drum gear normal to the contacting surfaces at B, calculate the average offset of the center of mass G of the sand from the vertical centerline. Neglect all friction in the supporting rollers. Assume r = 150 mm, R= 630 mm, 0 = 15% Detail of contact at B Answer: x= i B 14 ! mmarrow_forwardi need all sub partarrow_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
Fluid Mechanics - Viscosity and Shear Strain Rate in 9 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=_0aaRDAdPTY;License: Standard youtube license