Block a (0

question 30

Multiple Choice

Block A (0.40 kg) and block B (0.30 kg) are on a frictionless table (see figure) .Spring 1 connects block A to a frictionless peg at 0 and spring 2 connects block A and block B.When the blocks are in uniform circular motion about 0,the springs have lengths of and ,as shown.The springs are ideal and massless,and the linear speed of block B is .If the spring constant of spring 1 is equal to ,the unstretched length of spring 1 is closest to

• A) 0.51 m.
• B) 0.52 m.
• C) 0.53 m.
• D) 0.54 m.
• E) 0.55 m.

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