Suppose PAL's Boeing 777-300ER has a mass of 25 x 10^3 kg and its engines produce a total thrust of 40 kN along the runway . During the motion of the airplane , it experience a force of air resistance which is given by R = 2.25v^3 , where R is in Newton , and v is in m / s . Determine the length of the runway required if the airplane takes off and becomes airborne at a speed of 240 kph .
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3. Suppose PAL's Boeing 777-300ER has a mass of 25 x 10^3 kg and its engines produce a total thrust of 40 kN along the runway . During the motion of the airplane , it experience a force of air resistance which is given by R = 2.25v^3 , where R is in Newton , and v is in m / s . Determine the length of the runway required if the airplane takes off and becomes airborne at a speed of 240 kph .
4. Consider the system of pulleys shown . ( pulleys & strings are assumed to have negligible masses , and the strings are inextensible ) . Find the ( a ) tension of each of the three strings and ( b ) the acceleration of each of the three masses , if the system is released from rest .
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can you please provide clear answer, you can write it down on a paper
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