because the cross-sectional area decreases as the test progresses.
to keep the pressure constant, the weight must decrease.
(pressure is force divided by area)
From the origin O to the point called proportional limit, the stress-strain curve is a straight line. After reaching the proportional limit, the curve shows less stress until it gets to the ultimate strength, where the stress decreases.
copper has no linear portion to their stress-strain curve, so the offset method cannot be used. The European Standard for general-purpose copper rod, EN 12163 (Ref 8), gives approximate 0.2% proof strength.
c curve & d curve mcb difference
Input costs are the costs firms must pay in order for them to be able to present a product to a market. These can include land, capital and labour. If the supply is represented by an upward sloping curve on a supply-demand graph, input costs will influence how far to the left or right the entire curve will shift. This means that the cost of inputs will dictate the prices at which firms will be willing to sell different quantities of their product. Should input costs increase, firms will want to supply less of each product at each price, so the entire curve shifts to the left. Should input costs decrease (a decrease in wage rates, for example) then the firm will be able to offer more of each product at each price, and so the entire supply curve will shift to the right.
when we look at the curve ,, we can see that before the peak point curve has greater slope as compared to the slope after the peak point .. the reason is PL is given as I^2RL ,,, current is a squared term here . before peak point current is greater so overall change in power is much greater but after peak point RL is greater and current is less now the load resistance is not a squared term... so slope will be less. therefore the curve is not symetrical
jubo
jubo
jubo
Factors that affect the maximum velocity on a curve with no incline include the radius of the curve, the coefficient of friction between the tires and the road, and the mass of the vehicle. A tighter curve radius, lower friction, or higher vehicle mass will decrease the maximum velocity the vehicle can safely travel around the curve without skidding.
The average variable cost curve compares the company's maximum performance to its present state. For example if the minimum profits are to the left of the AC it means the company will decrease profits by increasing their production. Therefore creating a curve.
see the following questionWhat_the_difference_between_true_strain_and_engineering_strain
The slope of the tangent line at the maximum point of the curve is zero. So we say that as a curve point approaches to the maximum point, the slope of the tangent line at that point approaches to zero.
Stainless Steel 316 properties - Tensile Yield Strength (.2% offset): 276 MPa / 40 kpsi Ultimate Tensile Strength: 621 MPa / 90 kpsi Not sure which you're looking for, so both in case. Yield strength uses the slope of the initial elastic region of the stress-strain graph to determine a 0.2% offset along the curve; ultimate tensile strength is essentially the maximum stress experienced along the stress-strain curve.
A frequency curve is a graph obtained by joining the points of a frequency polygon freehand smoothly.
Indifference curve is a curve. A curve that is being intersected with the budget line. In order to show the maximum satisfaction. Dave Ono:
Shift of the curve to the left.
of average product.