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19 June, 13:10

A toy cart at the end of a string 0.70 m long moves in a circle on a table. The cart has a mass of 2.0 kg and the string has a breaking strength of 40. N. Calculate the maximum speed the cart can attain without breaking the string

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  1. 19 June, 16:39
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    Given that the mass of the toy cart is 2.0 kg and and the acceleration is unknown, the normal formula would be a=f/m where a is acceleration, f is force and m is mass but the string's breaking strength is 40n so I think the formula in this case will be f is greater than m*a

    40 is greater than 2a

    40 is greater than 2a

    40/2 is greater than 2a/2

    20m/s² is greater than a

    Therefore the maximum speed the toy cart should have should be less than 20m/s²
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