Physics

A mass M = 40.0 kg is suspended by a massless string from the ceiling of a van which is moving with constant acceleration a, as shown in the figure. If the string makes an angle theta = 21° with respect to the vertical, what is the acceleration a of the van?
What is the tension in the string?

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  1. a=g•tanθ
    T= sqrt{(ma)²+(mg)²}=
    =m•sqrt{a²+g²}

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  2. Thank you so much Elena!!

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