International Edition---engineering Mechanics: Statics 4th Edition
4th Edition
ISBN: 9781305856240
Author: Pytel
Publisher: Cengage
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Chapter 7, Problem 7.22P
A 1.1-kg disk A is placed on the inclined surface. The coefficient of static friction between the disk and the surface is 0.35. Is the disk in equilibrium if
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Procedure:1- Cartesian system, 2D3D,type of support2- Free body diagram3 - Find the support reactions4- If you find a negativenumber then flip the force5- Find the internal force3D∑Fx=0∑Fy=0∑Fz=0∑Mx=0∑My=0\Sigma Mz=02D\Sigma Fx=0\Sigma Fy=0\Sigma Mz=05- Use method of sectionand cut the elementwhere you want to find
Procedure:1- Cartesian system, 2D3D,type of support2- Free body diagram3 - Find the support reactions4- If you find a negativenumber then flip the force5- Find the internal force3D∑Fx=0∑Fy=0∑Fz=0∑Mx=0∑My=0\Sigma Mz=02D\Sigma Fx=0\Sigma Fy=0\Sigma Mz=05- Use method of sectionand cut the elementwhere you want to findthe internal force andkeep either side of the
Procedure:
1- Cartesian system, 2D3D,
type of support
2- Free body diagram
3 - Find the support reactions
4- If you find a negative
number then flip the force
5- Find the internal force
3D
∑Fx=0
∑Fy=0
∑Fz=0
∑Mx=0
∑My=0
ΣMz=0
2D
ΣFx=0
ΣFy=0
ΣMz=0
5- Use method of section
and cut the element
where you want to find
the internal force and
keep either side of the
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...
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- Procedure:1- Cartesian system, 2D3D,type of support2- Free body diagram3 - Find the support reactions4- If you find a negativenumber then flip the force5- Find the internal force3D∑Fx=0∑Fy=0∑Fz=0∑Mx=0∑My=0\Sigma Mz=02D\Sigma Fx=0\Sigma Fy=0\Sigma Mz=05- Use method of sectionand cut the elementwhere you want to findthe internal force andkeep either side of thearrow_forwardProcedure: 1- Cartesian system, 2(D)/(3)D, type of support 2- Free body diagram 3 - Find the support reactions 4- If you find a negative number then flip the force 5- Find the internal force 3D \sum Fx=0 \sum Fy=0 \sum Fz=0 \sum Mx=0 \sum My=0 \Sigma Mz=0 2D \Sigma Fx=0 \Sigma Fy=0 \Sigma Mz=0 5- Use method of section and cut the element where you want to find the internal force and keep either side of the sectionarrow_forwardProcedure: 1- Cartesian system, 2(D)/(3)D, type of support 2- Free body diagram 3 - Find the support reactions 4- If you find a negative number then flip the force 5- Find the internal force 3D \sum Fx=0 \sum Fy=0 \sum Fz=0 \sum Mx=0 \sum My=0 \Sigma Mz=0 2D \Sigma Fx=0 \Sigma Fy=0 \Sigma Mz=0 5- Use method of section and cut the element where you want to find the internal force and keep either side of the sectionarrow_forward
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