A pulley fixed to the ceiling of an elevator car carries a thread whose ends are attached to the...

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A pulley fixed to the ceiling of an elevator car carries a thread whose ends are attached to the loads of masses \( m_{1} \) and \( m_{2} \). The car starts going up with an acceleration \( \mathbf{w}_{0} \). Assuming the masses of the pulley and the thread, as well as the friction, to be negligible find:
the force exerted by the pulley on the ceiling of the car.
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