Radial Net Forces And Circular Motion Problems (#3) Worksheet With Answers printable pdf download

Radial Net Forces And Circular Motion Problems (#3) Worksheet With Answers

Radial Net Forces and Circular Motion Problems (#3)

For each of the problems below, a diagram is really important. You must begin your solution with a clear,

accurate free body diagram. Show your solutions step by step starting with the basic conceptual equation

(Newton’s 2

Law). Use separate pieces of paper to solve these problems.

1. Saturn travels at an average speed of 9.66 x 10

m/s around the Sun in a roughly circular orbit. Its

m. How long in seconds and earth years is a “year” on Saturn?

distance from the Sun is 1.43 x 10







. 1 (

)



9660

r=1.43x10



. 9

5 .

yrs

V=9660m/

2. Consider the radius of the Earth to be 6.38 x 10

m. What is the magnitude of the centripetal acceleration

experienced by a person (a) at the equator and (b) at the north pole due to the Earth’s rotation?





a) At equator a

= 0.034 m/s

= 0.0034 g’s

b) At pole, r = 0 so a

= 0

3. You tie a string to a rock and twirl it at a constant speed in a horizontal

circle with a radius of 1.30 m, 2.10 m above the ground. The rock

comes loose and travels as a projectile a horizontal distance of 9.40 m

before striking the ground.

1.3m

2.1m

9.4m

(a) What was the magnitude of the centripetal acceleration of the rock when it was on the string?

(b) What was the speed when it was on the string?

Radial Net Forces And Circular Motion Problems (#3) Worksheet With Answers