What is the speed of the glider as it passes through photogate#2. What is the ki

Question

What is the speed of the glider as it passes through photogate#2.
What is the kinetic energy of the system as the glider travelsthrough photogate #2
What is the kinetic energy of the glider as it passes throughphotogate #2
What is the kinetic energy of the hanging mass as the glider passesthrough photogate #2
Given: a. the distance between photogates is .15 m
   b. the mass of the glider is .160 kg
   c. the mass of the hanging weight is .005 kg
   d. the distance between leading edges of the flag is.025 m
   e. the time interval that elapses when the flag goesby the first photogate is .05 seconds
   f. the speed of the hanging weight is 0.5 m/sec as theglider passes through photogate #1
   g. assume the track is level and the system iscompletely frictionless

Explanation / Answer

0.005 x 9.8 x 0.15 + (0.165 ) x 0.5^2/2 = (0.165) x v^2/2

v = 0.582 m/s

K.E. = (0.16 + 0.005) x 0.582^2/2 = 0.02798 J

K.E. glider = 0.16 x 0.582^2/2 = 0.0271 J

K.E. hanging mass = 0.005 x 0.582^2/2 = 0.000847 J

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