HN 5 :4.1.4.7 roblem 4.17 Determine the acceleration of the sky divers Express y
ID: 1882852 • Letter: H
Question
HN 5 :4.1.4.7 roblem 4.17 Determine the acceleration of the sky divers Express your answer to three signiticant figures and include the appropriate units. Enter positive valu Two talling sky divers have total mass of 150 kg including parachute. The upward force of air resistance is equal to one-tourth of their weight (Figure 1) a Value Units Figure Ai Part B After opening the parachute, the divers descend lelsurely to the ground at constant speed. What now is the fo sky divers and their parachute? Express your answer to three significant figures and include the appropriate units. Enter positive value negative value if the force is downward. O Type here to search
Explanation / Answer
A)
Net force on divers
F= m g-mg/4
ma= - mg( 3/4)
a= - 0.75*9.8= - 7.35 m/s^2
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At constant speed net acceleration considered to be zero so net force
F= mg= 150*9.8= 1470 N
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Commemt in case any doubt.. good luck
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