× (e Chegg Study Order Con x / im The Expert TAI Human-1 m/Common/TakeTutorialAs
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× (e Chegg Study Order Con x / im The Expert TAI Human-1 m/Common/TakeTutorialAssignment.aspx × Class Management | Help Ch 4 test-C (Extra) Begin Date: 10/5/2017 12:05:00 AM - -Due Date: 10/10/2017 11:59:00 PM (14%) Problem 2: A block of mass m 19 kg rests on an inclined plane with a coefficient of static friction of u-0.195 between the block and the plane. The inclined plane is L-6.7 mn long and it has a height of h 3.45 mi at its tallest point. 20% Part (a) what angle, in degrees, does the plane make with respect to the horizontal 0 27.2451 7 8 9 HOME sinO cotan) asin acos) atan() | acotan() | sinh() 1 / | * | 1 | 2 | 3 | coshO tanh cotanh0 0 END e Degrees Radians NO BACKSPACE DEL CLEAR Submit Hint Feedback I give up Hints: .30% deduction per hint Hints remaining 2 Feedback: 30% deduction per feedback 20% Part (b) what is the magnitude of the normal force, Fvin newtons, that acts on the bloExplanation / Answer
m = 19 kg
s = 0.1 95
L = 6.7 m
h = 3.45 m
a) = arcsin(h/L) =arcsin(3.45/6.7) = 30.992°
b) Fn = m*g*cos =19*9.8*cos30.992 = 159.61 N
c) Fgx = m*g*sin = 19*9.81*sin30.992 =95.9756 N
d) Fs = µ*m*g*cos = 31.123 N
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