# physics

The drawing shows a 156-kg crate hanging from the end of a steel bar (S = 8.1 x 1010 N/m2). The length of the bar is 0.117 m, and its cross-sectional area is 7.44 x 10-4 m2. Neglect the weight of the bar itself and determine (a) the shear stress on the bar and (b) the vertical deflection Y of the right end of the bar.

I know that I have to use the equation to solve, but don't know how to start, If you could help explain the steps, I'll appreciate it.

1. 0
2. 0
3. 12
1. got it,
a) the stress is
F/A= mg/A = 156(9.8)/7.44*10^-4= 2.05*10^6 N/m^2
B) F=S(delta y/ Lo)A,, solve for delta y
delta y= (F/A)*(Lo/S)
the value of F/A was found in part a, so substitute the answer in the second equation.
2.05*10^6(0.117/8.1*10^10)=2.96*10^-6m

1. 0
2. 0
posted by S

## Similar Questions

1. ### physics

The drawing shows a 25.1-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, 1 and 2, are applied to the crate, and it begins to move. The coefficient of kinetic friction
2. ### PHYSICs

The drawing shows a 29.7-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces are applied to the crate, and it begins to move. The coefficient of kinetic friction between
3. ### physics

The drawing shows a 20.1-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, and , are applied to the crate, and it begins to move.The coefficient of kinetic friction
4. ### Physics

drawing shows a 25.0-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, and , are applied to the crate, and it begins to move. The coefficient of kinetic friction
5. ### Physics Homework

The drawing shows a 29.7-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, F1=88N and F2=54N, are applied to the crate, and it begins to move. The angle is 55 degrees.
6. ### physics

The drawing shows a 29.7-kg crate that is initially at rest. Note that the view is one looking down on the top of the crate. Two forces, F1=88N and F2=54N, are applied to the crate, and it begins to move. The angle is 55 degrees.
7. ### Physics

Composite bar with end load (two segments) The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2L=2 m and radius R=1 cm and a sleeve of steel of length L=1 m and thickness R=1 cm
8. ### Physics

A beam of mass mb = 10.0 kg, is suspended from the ceiling by a single rope. It has a mass of m2 = 40.0 kg attached at one end and an unknown mass m1 attached at the other. The beam has a length of L = 3 m, it is in static
9. ### physic

The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2l=2m and radius R=1cm and a sleeve of steel of length L=1m and thickness R=1cm surrounding the aluminum core in the CD section of the
10. ### Slsu

A piece of steel bar 29 7/8inches long was cut from a steel bar of 6 feet. how long was the remaining steel bar?

More Similar Questions