Q7) If the units of the following variables are given as Which of the following
ID: 1778552 • Letter: Q
Question
Q7) If the units of the following variables are given as Which of the following equations is dimensionally correct: Q8) Due to a jaw injury, a patient must wear a strap (see the figure) that produces a tension force of 3 N. The angle between both sides of the strap is 75". The net upward force on his chin a) 6 N b) 4.8 N e) 5.6 N d) 3.6 N e) 1.6N 09) If the coefficient of static friction between a patient and the bed sheets is 1.2, what is the maximum angle (0) at which the bed can be tilted with respect to the floor before the patient begins to slide? a) 45 b) 60° ) 30° d) 50° e) 25 Q10) Object A has mass of 2 kg and object B has mass of 4 kg. Both masses are dropped from the same height. Upon reaching the ground, (Ignoring air resistance) a) Object A has twice the speed of object B b) Object B has twice the speed of object A c) Object A has four times the speed of objectB d) Object A has same speed as object B e) Object B has four times the speed of object A Physics for Med. Sci. Midterm Exam, Fall, 13/14 (Ataelmanan, Maya, Bassam)Explanation / Answer
7) option B) is correct.
8) option B) is correct.
9) option D) is correct.
bed is at angle A
normal force = mgcosA
friction force (max) = mgcosAu where u = 1.2
component of weight parallel to bed = mgsinA
mgsinA = mgcosAu ; tanA = u = 1.2
A = arctan (1.2) = 0.876 rad = 50 degrees
10) option D) is correct.
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