Learning Materials
Features
Discover
Chapter 5: Q20. (page 131)
People sometimes ask, "What keeps a satellite up in its orbit around the Earth?" How would you respond?
The satellite remains in the orbit due to its speed and centripetal force.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
A curve of radius 78 m is banked for a design speed of 85 km/h. If the coefficient of static friction is 0.30 (wet pavement), at what range of speeds can a car safely make the curve? [Hint. Consider the direction of the friction force when the car goes too slow or too fast.]
A coin is placed 13.0 cm from the axis of a rotating turntable of variable speed. When the speed of the turn-table is slowly increased, the coin remains fixed on the turntable until a rate of 38.0 rpm (revolutions per minute) is reached, at which point the coin slides off. What is the coefficient of static friction between the coin and the turntable?
Calculate the effective value of g, the acceleration of gravity, at (a) 6400 m, and (b) 6400 km, above the Earth’s surface.
How large must the coefficient of static friction be between the tires and the road if a car is to round a level curve of radius 125 m at a speed of 95 km/h?
Determine the mean distance from Jupiter for each of Jupiter’s principal moons, using Kepler’s third law. Use the distance of Io and the periods given in Table 5–3. Compare your results to the values in Table 5–3.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App