Solution to Test Paper 1
From Mechanics
| 1 (a) | \displaystyle \begin{align}
& {{0}^{2}}={{7}^{2}}+2(-\textrm{.}8)s \\ & s=\frac{49}{19\textrm{.}6}=2\textrm{.}5 \\ & \text{Max Height }=\text{ 5}+\text{2}\text{.5}=\text{7}\text{.5 m} \\ \end{align} | (3 marks)
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| 1 (b) | \displaystyle \begin{align}
& 0=7-9\textrm{.}8t \\ & t=\frac{7}{9\textrm{.}8}=0\textrm{.}714\text{ s} \\ \end{align} | (3 marks) |
| (6 marks)
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| 2 (a) | \displaystyle \begin{align}
& T-800\times 9\textrm{.}8=800\times 0\textrm{.}2 \\ & T=\text{7840}+\text{160}=\text{8000 N} \\ \end{align} | (3 marks)
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| 2 (b) | \displaystyle \begin{align}
& T-800\times 9\textrm{.}8=800\times (-0\textrm{.}2) \\ & T=\text{7840}-\text{160}=\text{7680 N} \\ \end{align} | (3 marks)
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| 2 (c) | \displaystyle T=800\times 9\textrm{.}8=7840\text{ N} | (1 mark)
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| (7 marks)
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| 3 (a) | 
| (1 mark)
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| 3 (b) | \displaystyle F=2\times 1\textrm{.}8=3\textrm{.}6\text{ N} | (2 marks)
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| 3 (c) | \displaystyle R=2\times 9\textrm{.}8=19\textrm{.}6\text{ N} | (2 marks)
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| 3 (d) | \displaystyle \begin{align}
& 3 \textrm{.}6=19 \textrm{.}6\mu \\ & \mu =\frac{3 \textrm{.}6}{19 \textrm{.}6}=0 \textrm{.}184 \\ \end{align} | (3 marks)
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| (8 marks)
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| 4 (a) | 
| (1 mark)
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| 4 (b) | \displaystyle \begin{align}
& R+T\sin 30{}^\circ =200\times 9 \textrm{.}8 \\ & R+0 \textrm{.}5T=1960 \\ & R=1960-0 \textrm{.}5T \\ \end{align} | (3 marks)
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| 4 (c) | \displaystyle
\displaystyle \begin{align} & F=T\cos 30{}^\circ \\ & T\cos 30{}^\circ =0\textrm{.}6(1960-0\textrm{.}5T) \\ & T(\cos 30{}^\circ +0\textrm{.}3)=1176 \\ & T=\frac{1176}{(\cos 30{}^\circ +0\textrm{.}3)}=1010\text{ N} \\ \end{align} | (4 marks)
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| (8 marks)
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| 5 (a) go here | more cells in the same row here | even more cells in the same row here
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| 5 (b) | more cells in the same row here | even more cells in the same row here
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| 5 (c) | more cells in the same row here | even more cells in the same row here
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| 5 (d) | more cells in the same row here | even more cells in the same row here
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| cells in the next row go here | more cells in the same row here | even more cells in the same row here
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| cells in the next row go here | more cells in the same row here | even more cells in the same row here
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| Row heading 1 | Cell 2 | Cell 3 |
| Row heading A | Cell B | Cell C |
