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1 review
by: Oscar Ulloa

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# Exam2practiceproblems.pdf

Marketplace > Exam2practiceproblems pdf
Oscar Ulloa
WSU
GPA 2.64

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KARMA
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This 4 page Reader was uploaded by Oscar Ulloa on Sunday October 11, 2015. The Reader belongs to a course at a university taught by a professor in Fall. Since its upload, it has received 17 views.

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## Reviews for Exam2practiceproblems.pdf

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Date Created: 10/11/15
thsics 101 Exam 2 Practice Problems Solutions to these problems will be provided during the review lecture The following formulas will be provided on the exam No notes allowed Energy WFd EKU K12Mv2 Ung Momentum ApFAt pmv Rotation KROT 12102 T rF sine T Ioc I mr2 point mass VwR Angular momentum L 100 L mvr point mass 1 An object of mass m 2 kg moves With a speed of v0 30 ms on a horizontal frictionless surface It collides With a stationary object With identical mass m and the two masses stick together I h a What is the velocity of the masses immediately after the collision b After the collision the masses start sliding up a hill What height h do they reach before they momentarily stop 2 Two masses m 01 kg are connected by a massless rod of length l 2 m Initially the rod and masses are at rest Ignore friction a Calculate the moment of inertia about the center Treat the two masses as point masses b Forces of F 3 N are applied to the masses as shown in the figure Calculate the torque around the center c After the forces are applied the system has an angular momentum of L 2 kg m2s What is the angular velocity 1 m F4 O OgtF 3 A child of mass m 30 kg runs at a speed of V0 10 ms A merrygoround M 90 kg R 20 m I MR22 rotates With an angular speed 000 30 rads mV0 V 9 Before 02 After a What is the total angular momentum of the system child plus merrygoround b The child holds on to the merrygoround The child and merrygoround rotate together at an angular speed 0 Find a

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