20. Exercises
From Mechanics
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| + | ===Exercise 20.1=== | ||
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| + | A particle, of mass 2 kg, is attached to a fixed point on a smooth horizontal table by a light inextensible string of length 50 cm. The particle travels in a circle on the table at 400 r.p.m. Find the tension in the string. | ||
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| + | </div>{{#NAVCONTENT:Answer|Answer 20.1|Solution|Solution 20.1}} | ||
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| + | ===Exercise 20.2=== | ||
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| + | A marble is made to rotate against the outside rim of a circular tray of radius 0.2 m. The mass of the marble is 100 grams and it moves at 2 <math>\text{m}{{\text{s}}^{-1}}</math>. Calculate the horizontal force that the tray exerts on the marble. | ||
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| + | </div>{{#NAVCONTENT:Answer|Answer 20.2|Solution|Solution 20.2}} | ||
Revision as of 17:04, 25 November 2009
| Theory | Exercises |
Exercise 20.1
A particle, of mass 2 kg, is attached to a fixed point on a smooth horizontal table by a light inextensible string of length 50 cm. The particle travels in a circle on the table at 400 r.p.m. Find the tension in the string.
Answer
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Solution
Exercise 20.2
A marble is made to rotate against the outside rim of a circular tray of radius 0.2 m. The mass of the marble is 100 grams and it moves at 2 \displaystyle \text{m}{{\text{s}}^{-1}}. Calculate the horizontal force that the tray exerts on the marble.
Answer
Solution
