GENERAL PHYSICS I Exam 2 Show work and justify your answers 1. A person weighing
ID: 1772375 • Letter: G
Question
GENERAL PHYSICS I Exam 2 Show work and justify your answers 1. A person weighing $89N rides in an elevator. What is the apparent weight of the passenger in each of the following situations? In each case, elevator's acceleration is 0.5m/s. (a) The passenger is on the magnitude of the the 1 floor and has pushed the button for the fifteenth floor: the elevator is beginning to move upward. (b) The elevator 2. The leg and cast in the figure weigh 273N (wi). Determine the weight wy and the angle a needed so that no force is exerted on the hip joint by the leg plus cast. 3. A setup similar to the one shown in figure is often used in hospital to support and apply tension in the rope supporting traction force to an injured leg. (a) Determine the force of the leg. (b) What is the traction force exerted on the leg? Assume the traction force is horizontal. 70° 8.00 kg A diver of mass m drops from a board 10.0m above the water's surface. Neglect air resistance. (a) Use conservation of mechanical energy to find his speed 5.0m above the water's surface. (b) Find his speed as he hits the water surface 4. 5. Ignoring air resistance, what is the minimum initial speed a projectile must have at Earth's surface if it is to escape earth's gravitational pull? Some useful constants and formulas: G-667 10-11Nm2/kg2.My5.98x1024hn RE=638 x1ofrn F=ma , F =Explanation / Answer
Q1.
a)
When the acceleration is upward, the apparent weight is increased by the sum of g and the acceleration of the elevator.
So, W = (589*(9.8+0.5))/9.8
= 619 N
b)
When the acceleration is downward, the apparent weight is decreased by the sum of g and the acceleration of the elevator.
So, W = (589*(9.8-0.5))/9.8
= 559 N
Pls post other questions separately
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