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23 Nov 2019

A 0.38 {\rm kg} pendulum bob is attached to a string 1.2 {\rm m}long.

What is the change in the gravitational potential energy of thesystem as the bob swings from point A to point B in thefigure
Express your answer using two significant figures.
\Delta U =


{\rm J}
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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A 0.43 pendulum bob is attachedto a string 1.2 long.

What is the change in the gravitational potential energy of thesystem as the bob swings from point A to point B in thefigure

In the system shown in the figure, suppose the block has a mass of3.2 kg, the spring has a force constant of 530 N/m, and thecoefficient of kinetic friction between the block and the floor is0.18.
ind the work done on the block by the spring and by friction as theblock is moved from point A to point B along path 2.
Express your answers using two significant figures separated by acomma.
W_{\rm sp\,A}, W_{\rm fr\,A} =


{\rm J}
Try Again; 5 attempts remaining
submitmy answersshow answer

Part B
Find the work done on the block by the spring and by friction ifthe block is moved directly from point A to point B.
Express your answers using two significant figures separated by acomma.
W_{\rm sp\,B}, W_{\rm fr\,B} =


{\rm J}
Try Again; 5 attempts remaining

A pendulum consists of a 1.7-kg bob attached to a light 2.3-m-longstring. While hanging at rest with the string vertical, the bob isstruck a sharp horizontal blow, giving it a horizontal velocity of4.6 m/s. At the instant the string makes an angle of 30ร‚ยฐ with thevertical, calculate the following:

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(b) the gravitational potential energy (relative to its value is atthe lowest point)
J

(c) the tension in the string?
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(d) What is the angle of the string with the vertical when the bobreaches its greatest height?
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