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Machine Design

In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________?

In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________?

A. decreasing the cross-section area of’ bar
B. increasing the cross-section area of bar
C. remain unaffected with cross-section area
D. would depend upon other factors
E. none of the above

In the case of an elastic bar fixed at upper end and loaded by a falling weight at lower end, the shock load produced can be decreased by_________________? Read More »

Machine Design

If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?

If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?

A. be independent of ratio of mass of load W to mass of bar (y)
B. increase with increase in y
C. decrease with decrease in y
D. depend on other considerations
E. none of the above

If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________? Read More »

Machine Design