Exercise No 1: An 800 g ice cube slides without friction down a track as shown in the figure below. Ignoring air resistance, if the ice cube starts from rest at point A: (a) What is the total mechanical energy of the cube at point B? (b) Calculate the speed of the cube at point D. (c) How much work is done by gravity in moving the object from point A to point E? A YA = 5 m B YB = 3 m D Yc = 2 m YE=4 m YD=3 m
Exercise No 1: An 800 g ice cube slides without friction down a track as shown in the figure below. Ignoring air resistance, if the ice cube starts from rest at point A: (a) What is the total mechanical energy of the cube at point B? (b) Calculate the speed of the cube at point D. (c) How much work is done by gravity in moving the object from point A to point E? A YA = 5 m B YB = 3 m D Yc = 2 m YE=4 m YD=3 m
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Transcribed Image Text:Exercise No 1:
An 800 g ice cube slides without friction down a track as shown in the figure below. Ignoring air resistance,
if the ice cube starts from rest at point A: (a) What is the total mechanical energy of the cube at point B? (b)
Calculate the speed of the cube at point D. (c) How much work is done by gravity in moving the object from
point A to point E?
A.
YA = 5 m
B
YB = 3 m
2.00 m
D
YE = 4 m
YD= 3 m
Yc = 2 m
Exercise No 2:
A 500-g block is released from rest and slides down a frictionless track that begins 2.0 m above the horizontal,
as shown. At the bottom of the track, where the surface is horizontal, the block strikes and sticks to a light
spring with a spring constant of 20.0 N/m. Find the maximum distance the spring is compressed.
0.500 kg
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