Mechanics of Materials
11th Edition
ISBN: 9780137605460
Author: Russell C. Hibbeler
Publisher: Pearson Education (US)
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Chapter 8.2, Problem 46P
He is supported uniformly by two bars, each having a diameter of 25 mm. Assume the floor is smooth. Use the curved-beam formula to calculate the bending stress.
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856 Theory of Machines
5.
A shaft carries five masses A, B, C, D and E which revolve at the same radius in planes which are
equidistant from one another. The magnitude of the masses in planes A, C and D are 50 kg, 40 kg
and 80 kg respectively. The angle between A and C is 90° and that between C and D is 135°
Determine the magnitude of the masses in planes B and E and their positions to put the shaft in
complete rotating balance.
[Ans. 12 kg, 15 kg; 130° and 24° from mass A in anticlockwise direction]
2.
3.
4.
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Four masses A, B, C and D revolve at equal radii and are equally spaced along a shaft. The mass B
is 7 kg and the radii of C and D make angles of 90° and 240° respectively with the radius of B. Find
the magnitude of the masses A, C and D and the angular position of A so that the system may be
completely balanced.
[Ans. 5 kg: 6 kg; 4.67 kg; 205° from mass B in anticlockwise direction]
A rotating shaft carries four masses A, B, C and D which are radially attached to it. The mass
centres are 30 mm, 38 mm, 40 mm and 35 mm respectively from the axis of rotation. The masses
A, C and D are 7.5 kg. 5 kg and 4 kg respectively. The axial distances between the planes of
rotation of A and B is 400 mm and between B and C is 500 mm. The masses A and C are at right
angles to each other. Find for a complete balance,
1. the angles between the masses B and D from mass A,
2. the axial distance between the planes of rotation of C and D.
3. the magnitude of mass B.
[Ans. 162.5%,…
Chapter 8 Solutions
Mechanics of Materials
Ch. 8.1 - If it is subjected to an internal pressure of p =...Ch. 8.1 - If it is subjected to an internal pressure of p =...Ch. 8.1 - The thin-walled cylinder can be supported in one...Ch. 8.1 - If the inner diameter of the tank is 22 in., and...Ch. 8.1 - Prob. 5PCh. 8.1 - 88. The steel water pipe has an inner diameter of...Ch. 8.1 - The steel water pipe has an inner diameter of 12...Ch. 8.2 - Fundamental Problems F81. Determine the normal...Ch. 8.2 - Show the results in a differential element at the...Ch. 8.2 - Determine the state of stress at point A on the...
Ch. 8.2 - Determine the magnitude of the load P that will...Ch. 8.2 - Determine the state of stress at point B. Show the...Ch. 8.2 - Determine the state of stress at point A on the...Ch. 8.2 - Determine the state of stress at point A on the...Ch. 8.2 - Show the results in a differential element at the...Ch. 8.2 - The plate has a thickness of 20 mm and P acts...Ch. 8.2 - Plot the distribution of normal stress acting...Ch. 8.2 - Also, plot the normal-stress distribution over the...Ch. 8.2 - Determine the stress components at point A on the...Ch. 8.2 - Determine the stress components at point B on the...Ch. 8.2 - If it is subjected to the force system shown,...Ch. 8.2 - Neglect the weight of the block.Ch. 8.2 - Neglect the weight of the block.Ch. 8.2 - He is supported uniformly by two bars, each having...Ch. 8.2 - Specify the region to which this load can be...Ch. 8.2 - The pins at C and D are at the same location as...Ch. 8.2 - If the force at the ram on the clamp at D is P= 8...Ch. 8.2 - Determine the maximum ram force P that can be...Ch. 8.2 - and an outer radius of 3.00 in. If the face of the...Ch. 8 - If it supports a cable loading of 800 lb,...Ch. 8 - Determine the state of stress at point E on the...Ch. 8 - Determine the state of stress at point F on the...Ch. 8 - The suspender arm AE has a square cross-sectional...Ch. 8 - If the cross section of the femur at section aa...Ch. 8 - If it has a mass of 5 kg/m, determine the largest...Ch. 8 - and is used to support the vertical reactions of...Ch. 8 - and is used to support the vertical reactions of...
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