Questions On Physics

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Pages: 8

TMA03 Covering Block 3

Question 1

(a) An impactor mass of 45 kg is used to represent the weight of child reasonably regarded to be involved in an accident with glass or plastics.

(b) The BS standards gives the manufacturers a clear set of standards that their products need to achieve to be safe and fit for the purpose that they have been designed for. It also gives the purchaser the expectation that the item has reached the standards set down by the BSI and will be a safe for the expected life of the item.

(c) (i) The energy on impact is calculated by using the following equations:

Potential Energy (PE) = mass x gravity x height

This gives the potential energy at the height when
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(ii) The supporting member between the two Suggest what effect the extra part is likely to have on the performance of the Catnic lintel compared to the Dorman Long lintel. (6 + 2 = 8 marks)

Question 3

a) Although in a perfect environment there would be no risk to any persons or property and to remove any risk would mean stopping the processes that give rise to risk. However that is not the case so there will always risk involved in everything that we carry out. I have widely based this answer on the nuclear power industry where the risks involved are both acceptable and less acceptable.

|Risk more acceptable |
|No alternatives available |This could be classed as the use of a radio active fuel in a nuclear power |
| |station. The risk of its use would be classed as acceptable as there is not|
| |a suitable alternative as a fuel. |
|Risk known with certainty |The use of a radio active fuel and its risks are known with certainty and |