![Physics](/tpl/images/cats/fizika.png)
The spring-mounted 0.84-kg collar A oscillates along the horizontal rod, which is rotating at the constant angular rate rad/s. At a certain instant, r is increasing at the rate of 610 mm/s.
If the coefficient of kinetic friction between the collar and the rod is 0.61, calculate the friction force F exerted by the rod on the collar at this instant.
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Answers: 2
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The spring-mounted 0.84-kg collar A oscillates along the horizontal rod, which is rotating at the co...
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