Part A: A mass of 1.0 kg is being lowered (directly downward) by a string at the rate of 1.0 m/s2 such that the string is speeding up. Calculate the tension in the string.
A. 8.8 N
B. 10.8 N
C. 9.8 N
D. 7.8 N
E. 11.8 N
If the mass were lowered 1.7 m, calculate the work done by the tension in the string.
A. 15 J
B. 18 J
C. -18 J
D. 19 J N
E. -15 J
Calculate the change in the mass? kinetic energy after the displacement of 1.7 m, assuming it started at rest.
A. 0.9 J
B. 1.7 J
C. 3.0 J
D. 6.0 J
E. 0 J
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