gc physics textbook chapter 5 problems (id: 27a827d1b)

本题目来源于试卷: gc physics textbook chapter 5 problems，类别为 IB物理学

[填空题]
A horizontal force of 210 N is g; 8ahe1 :-4krb6iqvuyo blxtt rd54:exerted on a 2.0-kg discus as it rotat+)-;w pf:9sgftybo dmes uniformly in a horizontal circle dw +bp t9:f;gmoy )-sf(at arm’s length) of radius 0.90 m. Calculate the speed of the discus.   

参考答案: 9.7±2%


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