Two tugboats pull a disabled supertanker. Each tug exerts a constant force of
1.3×10^6 N , one an angle 12 degree west of north and the other an angle 12
degree east of north, as they pull the tanker a distance 0.88km toward the
north.
What is the total work they do on the supertanker?
W = ? J
work done
2012-10-19 6:05 am
回答 (1)
2012-10-19 4:32 pm
✔ 最佳答案
Force due north acting on the supertanker by each tugboat= 1.3x10^6.cos(12) N = 1.27 x 10^6 N
Hence, work done by the 2 tugboats
= 2 x 1.27x10^6 x 0.88x1000 J
= 2.24 x 10^9 J
收錄日期: 2021-04-29 17:49:31
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https://hk.answers.yahoo.com/question/index?qid=20121018000051KK00545