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The alarm at a fire station rings and a 92.5-kg fireman, starting from rest, slides down a pole to the floor below (a distance of 4.60 m). Just before landing, his speed is 1.59 m/s. What is the magnitude of the kinetic frictional force exerted on the fireman as he slides down the pole?
PLEASE SHOW ME THE ANSWER AND HOW YOU GOT IT
AND WHO MIGHT BE ASKING
THAT IS WIERD. I TAKE IT YOUR DOING YOUR WILEY PLUS TOO. WHO IS THUNDERANDLIGHTNIING
V = AT
1.59 = AT — and A = 1.59/T
H = (AT^2)/2 = VT/2
4.6 = 1.59T/2
T= 5.786163522
A = 5.786163522/1.59 = 0.274793478
Since G = 9.81, then G – A = 9.535206522 = acceleration due to friction.
F = MA = 92.5 * 9.535206522 = 882.0066033
old fire alarm pull stations: Kidde B5
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