A small object of mass 2.0 kg slides along the frictionless track shown in the figure. If the object is released from rest at a height of h = 3.0 m, what is its kinetic energy at the top of the loop, which has a radius of 0.9 m? (Assume the mass remains in contact with the track) O 41.21 23.5J 58.9) O-14 m/s

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Chapter8: Conservation Of Energy
Section: Chapter Questions
Problem 8.43AP: A small block of mass m = 200 g is released from rest at point along the horizontal diameter on the...
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A small object of mass 2.0 kg slides along the frictionless track shown in the figure. If the object is released from rest at a
height of h = 3.0 m, what is its kinetic energy at the top of the loop, which has a radius of 0.9 m? (Assume the mass
remains in contact with the track)
O 41.2)
23.5J
58.9J
-14 m/s
QUESTION
ISwer
A trained archer has the ability to draw a longbow with a force of up to 100 N while extending the string back by 1 m.
Assume the bow behaves like an ideal spring with a spring constant of 100 N/m, allowing the archer to make use of their
full strength. When drawn by 1 m, what speed will an arrow be fired at assuming the arrow has a mass of 0.01 kg ?
50 m/s
75 m/s
100 m/s
200 m/s
Transcribed Image Text:5.5r nswer A small object of mass 2.0 kg slides along the frictionless track shown in the figure. If the object is released from rest at a height of h = 3.0 m, what is its kinetic energy at the top of the loop, which has a radius of 0.9 m? (Assume the mass remains in contact with the track) O 41.2) 23.5J 58.9J -14 m/s QUESTION ISwer A trained archer has the ability to draw a longbow with a force of up to 100 N while extending the string back by 1 m. Assume the bow behaves like an ideal spring with a spring constant of 100 N/m, allowing the archer to make use of their full strength. When drawn by 1 m, what speed will an arrow be fired at assuming the arrow has a mass of 0.01 kg ? 50 m/s 75 m/s 100 m/s 200 m/s
A box of mass 10 kg is pushed up a frictionless inclined plane with an angle of 55 degrees with respect to horizontal. A constant force of magnitude 50 N is
applied to the crate parallel to the incline. How much work has been done by the force when the box has slid 4 m up the incline?
200J
200 W
87J
55J
An object sitting at rest at the origin of an xyz-coordinate system explodes, breaking into 3 pieces. The first piece of
mass 1.67 kg moves away from the origin with velocity 13 m/s 7 and the second particle of mass 1.67 kg moves away
from the origin with velocity 22 m/s? - 13 m/s ĵ. What is the magnitude of the momentum of the third particle of mass
0.00214kg?
36.74 kg m/s
-22 m/s
0.074 kg m/s
22 kg m/s
Transcribed Image Text:A box of mass 10 kg is pushed up a frictionless inclined plane with an angle of 55 degrees with respect to horizontal. A constant force of magnitude 50 N is applied to the crate parallel to the incline. How much work has been done by the force when the box has slid 4 m up the incline? 200J 200 W 87J 55J An object sitting at rest at the origin of an xyz-coordinate system explodes, breaking into 3 pieces. The first piece of mass 1.67 kg moves away from the origin with velocity 13 m/s 7 and the second particle of mass 1.67 kg moves away from the origin with velocity 22 m/s? - 13 m/s ĵ. What is the magnitude of the momentum of the third particle of mass 0.00214kg? 36.74 kg m/s -22 m/s 0.074 kg m/s 22 kg m/s
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