PHYS 2325 Homework Assignment In addition to these two problems, please turn in

Question

PHYS 2325 Homework Assignment In addition to these two problems, please turn in all problems on the Work and Energy Homeowr problems 33 and 34 from problem set 5, and problems 33 and 37 from problem set 6 MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) An 8.0-kg block is released from rest, with v1 = 0.00 m/s, on a rough incline, as shown in the figure. The block moves a distance of 1.6-m down the incline, in a time interval of 0.80 s, and acquires a velocity of v2-4.0 m/s. How much work does gravity do on the block during this process? 1)- V1= 0 m/s v2= 4 m/s 1.6 m 40° D)-100 J B) +120 J C) +81 J A)+100 J

Explanation / Answer

Workdone by gravity

Wg= (mgsin x) d= 8*9.8* sin 40* 1.6= 81 J

Option (c) is correct

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Do comment in case any doubt..goodluck

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