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Identify the correct statements from the following: 

(A) Work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket is negative. 

(B) Work done by gravitational force in lifting a bucket out of a well by a rope tied to the bucket is negative. 

(C) Work done by friction on a body sliding down an inclined plane is positive. 

(D) Work done by an applied force on a body moving on a rough horizontal plane with uniform velocity in zero. 

(E) Work done by the air resistance on an oscillating pendulum in negative.

Choose the correct answer from the options given below: 

(1) B and E only 

(2) A and C only 

(3) B, D and E only 

(4) B and D only

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1 Answer

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by (50.5k points)

(A) Work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket is negative.

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