Whether the mechanical energy of the system is conserved or not.

Question

A playground ride consists of a disk of mass M=48 kg and radius R=1.6 m mounted on a low-friction axle (see figure below). A child of mass m=22 kg runs at speed v=2.8 m/s on a line tangential to the disk and jumps onto the outer edge of the disk. What is the change in the kinetic energy of the child plus the disk?

Answer 1

Question

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

(b)

To determine

Whether the momentum of the system is conserved or not.

(c)

To determine

Whether the mechanical energy is conserved or not.

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

(f)

To determine

Whether the momentum of given system is conserved or not.

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A playground ride consists of a disk of mass M=48 kg and radius R=1.6 m mounted on a low-friction axle (see figure below). A child of mass m=22 kg runs at speed v=2.8 m/s on a line tangential to the disk and jumps onto the outer edge of the disk. What is the change in the kinetic energy of the child plus the disk?

A block of mass m= 6.0 kg is attached to a spring (K=4.0 N/cm) by a rope that hangs over á pulley of mass M= 8.0 Kg.If the system starts from rest with the spring unextended, find the speed of the block af ter it falis 1.0 m. Take the pulley as a disk,so 1= MR?/2. k

Kindly answer it asap for an upvote. Answer the question carefully and include your explanation. Two objects, one of mass m and the other of mass 2m, are dropped from the top of the building. When they hit the ground a. the lighter one will have half of the kinetic energy of the heavier one b. both of them will have the same kinetic energy c. the heavier one will have twice the potential energy of the lighter one d. the heavier one will have four times the kinetic energy of the lighter one

Answer 2

Question

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

(b)

To determine

Whether the momentum of the system is conserved or not.

(c)

To determine

Whether the mechanical energy is conserved or not.

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

(f)

To determine

Whether the momentum of given system is conserved or not.

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Answer 3

Question

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

(b)

To determine

Whether the momentum of the system is conserved or not.

(c)

To determine

Whether the mechanical energy is conserved or not.

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

(f)

To determine

Whether the momentum of given system is conserved or not.

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Answer 4

Question

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

(b)

To determine

Whether the momentum of the system is conserved or not.

(c)

To determine

Whether the mechanical energy is conserved or not.

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

(f)

To determine

Whether the momentum of given system is conserved or not.

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Answer 5

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

(b)

To determine

Whether the momentum of the system is conserved or not.

(c)

To determine

Whether the mechanical energy is conserved or not.

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

(f)

To determine

Whether the momentum of given system is conserved or not.

Answer 6

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

Answer 7

Chapter 9, Problem 9.2OQ

(a)

To determine

Whether the mechanical energy of the system is conserved or not.

Answer 8

(b)

To determine

Whether the momentum of the system is conserved or not.

Answer 9

(b)

To determine

Whether the momentum of the system is conserved or not.

Answer 10

(c)

To determine

Whether the mechanical energy is conserved or not.

Answer 11

(c)

To determine

Whether the mechanical energy is conserved or not.

Answer 12

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

Answer 13

(d)

To determine

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

Answer 14

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

Answer 15

(e)

To determine

Whether the mechanical energy of given system is conserved or not.

Answer 16

(f)

To determine

Whether the momentum of given system is conserved or not.

Answer 17

(f)

To determine

Whether the momentum of given system is conserved or not.

Answer 18

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Answer 19

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Answer 29

Ch. 9 - Two objects have equal kinetic energies. How do...Ch. 9 - Your physical education teacher throws a baseball...Ch. 9 - Two objects are at rest on a frictionless surface....Ch. 9 - Rank an automobile dashboard, seat belt, and air...Ch. 9 - In a perfectly inelastic one-dimensional collision...Ch. 9 - A table-tennis ball is thrown at a stationary...Ch. 9 - A baseball bat of uniform density is cut at the...Ch. 9 - A cruise ship is moving at constant speed through...Ch. 9 - You are standing on a saucer-shaped sled at rest...Ch. 9 - Prob. 9.2OQ

Whether the mechanical energy of the system is conserved or not.

Solution Summary: The author explains that the mechanical energy of the system is not conserved. The inelastic collision occurs because both cars stick together and roll.

Concept explainers

Whether the mechanical energy of the system is conserved or not.

Whether the momentum of the system is conserved or not.

Whether the mechanical energy is conserved or not.

Whether the momentum is conserved or not if the two cars are considered as system as the boxcar is slowing down in the coupling process.

Whether the mechanical energy of given system is conserved or not.

Whether the momentum of given system is conserved or not.

Chapter 9 Solutions