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A pile driver hammer of mass 272 kg falls freely through a distance of 4.2 m to strike a pile of mass 516 kg and drives it 75 mm into the ground. The hammer does not rebound when driving the pile. Determine the average resistance of the ground. (Use D’Alembert’s principle and compare the principle of Conservation of Energy when solving the problem).

Task 1: A pile driver hammer of mass 272 kg falls freely through a distance of 4.2 m to strike a pile of mass 516 kg and drives it 75 mm into the ground. The hammer does not rebound when driving the pile. Determine the average resistance of the ground. (Compare, use and contrast the use of D’Alembert’s principle with the principle of Conservation of

Energy when solving the problem given in Task 1. You must fully answer each task and show all steps, including text. You must include labelled diagrams to aid your solutions).

Energy when solving the problem given in Task 1. You must fully answer each task and show all steps, including text. You must include labelled diagrams to aid your solutions).

A pile driver hammer of mass 272 kg falls freely through a distance of 4.2 m to strike a pile of

mass 516 kg and drives it 75 mm into the ground. The hammer does not rebound when driving the pile. Determine the average resistance of the ground.

Note: You must fully answer each task and show all steps, including text. You must include

labelled diagrams to aid your solutions.

mass 516 kg and drives it 75 mm into the ground. The hammer does not rebound when driving the pile. Determine the average resistance of the ground.

Note: You must fully answer each task and show all steps, including text. You must include

labelled diagrams to aid your solutions.

A lift cage of mass 826 kg accelerates uniformly upwards from rest to a velocity of 7 ms−1

whilst travelling a distance of 36 m. The frictional resistance to motion is 244 N. Making

use of the principle of conservation of energy, determine:

i) The work done

ii) The tension in the lifting cable

Iii) The average power developed

whilst travelling a distance of 36 m. The frictional resistance to motion is 244 N. Making

use of the principle of conservation of energy, determine:

i) The work done

ii) The tension in the lifting cable

Iii) The average power developed

A space vehicle travelling at a velocity of 1206ms−1 separates by a controlled explosion

into two sections of mass 952 kg and 332 kg. The two parts carry on in the same direction

with the lighter front section moving 145 ms−1 faster than the heavier rear section. Determine the

final velocity of each section. Ensure you include a labelled diagram.

into two sections of mass 952 kg and 332 kg. The two parts carry on in the same direction

with the lighter front section moving 145 ms−1 faster than the heavier rear section. Determine the

final velocity of each section. Ensure you include a labelled diagram.

A hole (diameter 5+-0,1 mm) is drilled into a cube (edge 20+- 0,2 mm). Calculate the volume of the body and its cumulative error.

A piston cylinder contains gas initially at 3500 kPa with a volume of 0.03 cubic meter. The gas is compressed during a process where pV raise to 1.25 = C to a pressure of 8500 kPa. The heat transfer from the gas is 2.5 kJ. Determine the change in internal energy, neglecting changes in kinetic and potential energies. Graph a PV and TS Plane.

Design a signal conditioning circuit using an NTC thermistor that could measure temperature

within 00C to 300C with ±20C tolerance. The output of this signal conditioning circuit should

be interfaced to an Arduino Uno. The NTC thermistor used for this application is a Standard

Lug NTC manufactured by Vishay. The Ordering number is NTCALUG01A103F [3] [12%]

within 00C to 300C with ±20C tolerance. The output of this signal conditioning circuit should

be interfaced to an Arduino Uno. The NTC thermistor used for this application is a Standard

Lug NTC manufactured by Vishay. The Ordering number is NTCALUG01A103F [3] [12%]

A 2.5m long steel towing bar of solid circular section diameter 50mm is expected to carry a maximum load of 300kN. The factore of safety is 4; and for the steel the UTS is 540Mnm*-2 (to the power of -2) and the modulas of elasticity is 200 GNm*-2.

Calculate the actual towing capacity of the bar and state whether the proposed limit is acceptable.

Calculate the actual towing capacity of the bar and state whether the proposed limit is acceptable.

I usually Mount the sample (Working Electrode) for potentiodynamics polarization studies to obtain Tafel plots. What is the significance of height of sample which is used for three electrode cell?

Because I recently used sample with height of 3cm and I could not obtain the Tafel plot, the software just gave random scattered points.

I again prepared the same sample by cutting it and decreasing its height to almost 1cm and the results obtained were fine.

So, please tell the significance of height of the working electrode and why does it only gave the scattered data??

Because I recently used sample with height of 3cm and I could not obtain the Tafel plot, the software just gave random scattered points.

I again prepared the same sample by cutting it and decreasing its height to almost 1cm and the results obtained were fine.

So, please tell the significance of height of the working electrode and why does it only gave the scattered data??