Problem

Problem

In Column I, some statements are given related to work done by a force on an object while in Column II the sign and information about value of work done is given. Match the entries of Column I with the entries of Column II.
Column IColumn II
(a) Work done by friction force on the block as it slides down a rigid fixed incline with respect to ground.(p) Positive
(b) In above case work done by friction force on incline with respect to ground.(q) Negative
(c) Work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket with respect to ground.(r) Zero
(d) Total work done by friction force in (a) with respect to ground.(s) may be positive, negative or zero.

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