Dad is pushing his son on the merry-go-round in the park. The merry-go-round has a mass of 160 kg and a diameter of 2.40 m; dynamically, it can be treated like a disc. His 35 kg son is sitting 0.80 m from the center of the merry-go-round. If dad pushes with a tangential force of 45.0 N for 1.50 seconds three times, what is the final angular velocity of the merry-go-round, and how fast is his son moving (tangentially) if the merry-go-round starts from rest

1. consider the case in which air fills air shocks on a truck trailer. the pressure in the shocks is 2 mpa. the temperature is 300 k. the diameter of the shock piston is 10 cm and the initial length of the cylindrical cavity containing the compressed air is 40 cm. a. the truck is gradually loaded over a period of a day in a static setting. the temperature is held constant for the atmosphere and thus for the gas shock. calculate the compressibility of the air in the shock for this condition when the truck is initially being loaded. b. if the shocks were loaded in a dynamic setting by driving over bumps, what would be the compressibility? state your assumption. c. what is the initial load on the shock if the shock is in an atmospheric 100 kpa? d. if the shock is compressed using the process described in part a, and the air shock compressed air cavity length decreases to 20 cm, what is the additional load applied to the shock?

Aquarterback pedals 3.3meters southward and then run 5.7meters northward. whats the distance ? and whats the displacement?

All the simple machines make work easier to do by changing the or of a force. a. size; type b. work; type c. size; direction d. type; direction