10. Exercises
From Mechanics
| 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
Exercise 10.3
A particle of mass 5 kg slides down a smooth plane, inclined at an angle of 30.\displaystyle 0{}^\circ to the horizontal. Find the acceleration of the particle down the plane.
Answer
Solution
