Consider a freely spinning merry-go-round, which can be treated as a uniform disc of radius R and mass m1 rotating about a vertical axis through its center. Initially the merrygo-round is at rest. A boy of mass m2 jumps with a horizontal speed v, landing at A, which is a distance R 4 from the center. Hint: Neglect the vertical fall of the boy. m , v m R/4 O A R 1 2 As the boy is approaching the merry-goround, what is the magnitude of his initial angular momentum with respect to the center of the merry-go-round

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.