41. (a) The mass of the elevator is m= (27800/9.80) = 2837 kg and (with +yupward) the acceleration is a= +1.22 m/s2. Newton’s second law leads to Tmgmaga−=¡=+bgwhich yields T= 3.13 ×104N for the tension. (b) The term “deceleration” means the acceleration vector is in the direction opposite to
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This note was uploaded on 05/17/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.