A 2kg ball moves in a circle of radius 10m. It makes 20 revolutions every 4 seconds. What is the... (a) Frequency? (b) Period? (c) Centripetal Acceleration? (d) Centripetal Force? (e) Speed? [10] The mass of the Earth and Moon are 5:98 1024 kg and 7:35 1022 kg respectively. The radius of the Earth and Moon are 6:38 10ºm and 1:74 10°m respectively. Calculate the acceleration due to gravity at the surface of the Earth and Moon. What is the gravitational acceleration 4000km

College Physics
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ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
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Chapter7: Rotational Motion And The Law Of Gravity
Section: Chapter Questions
Problem 11WUE: What is the gravitational acceleration close to the surface of a planet with a mass of 2ME and...
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1. A 2kg ball moves in a circle of radius 10m. It makes 20 revolutions every 4 seconds.
What is the...
(a) Frequency?
(b) Period?
(c) Centripetal Acceleration?
(d) Centripetal Force?
(e) Speed?
[10]
2. The mass of the Earth and Moon are 5:98 1024kg and 7:35 1022 kg respectively. The radius of
the Earth and Moon are 6:38 10ºm and 1:74 10°m respectively. Calculate the acceleration due
to gravity at the surface of the Earth and Moon. What is the gravitational acceleration 4000km
above Earth's surface?
[5]
3. (a) A car goes around a curve at 20.0 m/s. If the radius of the curve is 50.0 m, what is the
centripetal acceleration of the car?
[3]
(b) If the speed of the car were halved, how much di erent would ac be to travel the same radius
curve?
[2]
4. Calculate the centripetal acceleration of the Earth towards the Sun. (r = 1:5x10¹1 m)
[5]
Transcribed Image Text:1. A 2kg ball moves in a circle of radius 10m. It makes 20 revolutions every 4 seconds. What is the... (a) Frequency? (b) Period? (c) Centripetal Acceleration? (d) Centripetal Force? (e) Speed? [10] 2. The mass of the Earth and Moon are 5:98 1024kg and 7:35 1022 kg respectively. The radius of the Earth and Moon are 6:38 10ºm and 1:74 10°m respectively. Calculate the acceleration due to gravity at the surface of the Earth and Moon. What is the gravitational acceleration 4000km above Earth's surface? [5] 3. (a) A car goes around a curve at 20.0 m/s. If the radius of the curve is 50.0 m, what is the centripetal acceleration of the car? [3] (b) If the speed of the car were halved, how much di erent would ac be to travel the same radius curve? [2] 4. Calculate the centripetal acceleration of the Earth towards the Sun. (r = 1:5x10¹1 m) [5]
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