A rock attached to a string swings in a vertical circle. Which free-body diagram could correctly describe the force(s) on the rock when it is at the highest point, where 
is the normal force, 
is weight, and ![]()
data-wiris-created="true" src="https://sciemce.com/media/2/ppg__cognero__Chapter_6_Applications_of_Newton_apos_s_Laws_of_Motion.__media__e19b68f8-eb85-45b4-b469-7e72b4fc5ce9.PNG" style="vertical-align:middle;" /> is tension?
A.
B.
C.
D.
E.
Answer: C
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A) 1.4 N ? s B) 3.5 N ? s C) 5.6 N ? s D) 9.8 N ? s E) 7.0 N ? s
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A) 2 B) 1 C) -2 D) -1 E) 3
A planet is much brighter than the star it orbits
a. True b. False Indicate whether the statement is true or false
The four tires of an automobile are inflated to a gauge pressure of 2.0 × 10^5 N/m2 (29 PSI). Each of the four tires has an area of 0.024 m2 that is in contact with the ground. Determine the weight of the auto