The slotted arm rotates about its center in a horizontal plane at the constant angular r...

The slotted arm rotates about its center in a horizontal plane at the constant angular rate rad/sec and carries a 3.22-lb spring-mounted slider which oscillates freely in the slot. If the slider has a speed of 24 in./sec relative to the slot as it crosses the center, calculate the horizontal side thrust P exerted by the slotted arm on the slider at this instant. Determine which side, A or B, of the slot is in contact with the slider.