Question

A cord is used to lower vertically a block of mass MM a distance dd at a constant downward acceleration of g/4g/4. (a) Is the work done by the cord on the block positive or negative? A. positive B. negative (b) What is the right expression for the work done by the cord on the block? A. −4Md/g−4Md/g B. −Mg/(4d)−Mg/(4d) C. −3Mdg/4−3Mdg/4 D. −g/(4Md)−g/(4Md)

Name: a cord is used to lower vertically a block of mass mm a distance dd at a constant downward acceleration of g4g4 a is the work done by the cord on the block positive or negative a positive b 57035
Uploaded: 2021-09-30T13:37:38-08:00
Duration: 1 min 19 s
Channel: Dheeraj Sharma
Description: a cord is used to lower vertically a block of mass mm a distance dd at a constant downward acceleration of g4g4 a is the work done by the cord on the block positive or negative a positive b 57035

          A cord is used to lower vertically a block of mass MM a distance dd at a constant downward acceleration of g/4g/4.
(a)
Is the work done by the cord on the block positive or negative?
A.
positive
B.
negative
(b)
What is the right expression for the work done by the cord on the block?    
A.
−4Md/g−4Md/g
B.
−Mg/(4d)−Mg/(4d)
C.
−3Mdg/4−3Mdg/4
D.
−g/(4Md)−g/(4Md)

Added by Douglas M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

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Solved by Expert Dheeraj Sharma

09/30/2021

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A cord is used to lower vertically a block of mass MM a distance dd at a constant downward acceleration of g/4g/4. (a) Is the work done by the cord on the block positive or negative? A. positive B. negative (b) What is the right expression for the work done by the cord on the block? A. −4Md/g−4Md/g B. −Mg/(4d)−Mg/(4d) C. −3Mdg/4−3Mdg/4 D. −g/(4Md)−g/(4Md)