10. Exercises
From Mechanics
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c) travels upwards with a retardation of 0.1 <math>\text{m}{{\text{s}}^{-2}}</math>. | c) travels upwards with a retardation of 0.1 <math>\text{m}{{\text{s}}^{-2}}</math>. | ||
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</div>{{#NAVCONTENT:Answer a|Answer 10.1a|Answer b|Answer 10.1b|Answer c|Answer 10.1c|Solution a|Solution 10.1a|Solution b|Solution 10.1b|Solution c|Solution 10.1c}} | </div>{{#NAVCONTENT:Answer a|Answer 10.1a|Answer b|Answer 10.1b|Answer c|Answer 10.1c|Solution a|Solution 10.1a|Solution b|Solution 10.1b|Solution c|Solution 10.1c}} | ||
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| + | ===Exercise 10.2=== | ||
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| + | A car of mass 1 tonne travels along a horizontal road and brakes from | ||
| + | 50 <math>\text{m}{{\text{s}}^{-1}}</math> to rest in a distance of 300 m. Find the magnitude of the braking force on the car. | ||
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| + | </div>{{#NAVCONTENT:Answer|Answer 10.2|Solution|Solution 10.2}} | ||
Revision as of 16:27, 16 September 2009
| Theory | Exercises |
Exercise 10.1
A package with mass 300 kg is lifted vertically upwards. Find the tension in the cable which lifts the package, when the package,
a) accelerates upwards at 0.1 \displaystyle \text{m}{{\text{s}}^{-2}},
b) accelerates downwards at 0.2 \displaystyle \text{m}{{\text{s}}^{-2}},
c) travels upwards with a retardation of 0.1 \displaystyle \text{m}{{\text{s}}^{-2}}.
Answer a
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Answer b
Answer c
Solution a
Solution b
Solution c
Exercise 10.2
A car of mass 1 tonne travels along a horizontal road and brakes from 50 \displaystyle \text{m}{{\text{s}}^{-1}} to rest in a distance of 300 m. Find the magnitude of the braking force on the car.
Answer
Solution
