ii. Is the net force on the incline always zero? Explain. iii. Is the net force on the block-incline system always zero? (Hint: Draw free-body diagrams for the block, incline, and system consisting of both objects.) Explain. iv. Is the momentum of the block conserved? Explain. v. Is the momentum of the incline conserved? Explain. vi. Is the momentum of the block-incline system conserved? Explain.

ii. Is the net force on the incline always zero? Explain. iii. Is the net force on the block-incline system always zero? (Hint: Draw free-body diagrams for the block, incline, and system consisting of both objects.) Explain. iv. Is the momentum of the block conserved? Explain. v. Is the momentum of the incline conserved? Explain. vi. Is the momentum of the block-incline system conserved? Explain.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.

Question

b. A block slides down a frictionless
incline. The incline is fixed in place
on a table.
Incline at rest
i. Is the net force on the block
always zero? Explain.
ii. Is the net force on the incline always zero? Explain.
iii. Is the net force on the block-incline system always zero? (Hint: Draw free-body
diagrams for the block, incline, and system consisting of both objects.) Explain.
iv. Is the momentum of the block conserved? Explain.
v. Is the momentum of the incline conserved? Explain.
vi. Is the momentum of the block-incline system conserved? Explain.

Firecracker
a. A firecracker is at rest on a frictionless horizontal table.
The firecracker explodes into two pieces of unequal
mass that move in opposite directions on the table.
Before
i. Is the net force on the left piece always zero?
Explain.
After
I1. Is the net force on the system consisting of both pieces always zero? Explain.
iii. Is the momentum of the left piece conserved? Explain.
1V. Is the momentum of the system consisting of both pieces conserved? Explain.

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