Question

Please help me solve questions 6

6) A 50 kg person on a scale is in an elevator. The elevator is at rest for 3 seconds. Then it takes 0.8 seconds to accelerate to 6 m/s moving down. It moves elevator then takes 1.2 seconds to slow to a stop. at this speed for 5 seconds. The 6a) Draw an FBD of the situation during both of the accelerations. 42 What is the acceleration of the person during the first 3 seconds? 6c) What is the acceleration for the next 0.8 seconds? 6d) What is the acceleration for the next 5 seconds? Ge) What is the acceleration for the last 1.2 seconds? 61) Draw a velocity vs. time graph 6g) Draw an acceleration vs. time graph 6h) What is the apparent weight of the person during the first 3 seconds? 6i) What is the apparent weight for the next 0.8 seconds? 6) What is the apparent weight for the next 5 seconds?

Answer 1

Velocits (u) o s 3 s Sml s s S a 2 121 s Lift is accelesqゼng d deceleraゼng duging 8.8 ts los. usimg 3 to 3'8S and a FBD gpee d is decreaiina ost 3 sec acceleston of pes son is is at est we the elea O Beca inal Velocit via initial 6 ms

Reeaug e ese is no change in Veloei time intesval Peroson mo ves Con stamt velot becaw ein elevato,sto,ト 2 S evelocit decseas es wrtt time 3 mes

rn 2. Ang An Ans