JEE Mains · Physics · STD 11 - 5. work,energy,power and collision
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:
- A \(B\) and \(E\) only
- B \(A\) and \(C\) only
- C \(B, D\) and \(E\) only
- D \(B\) and \(D\) only
Answer & Solution
Correct Answer
(A) \(B\) and \(E\) only
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