Statement (A): Work done by a man in lifting a bucket out of well, by means of a rope tied to the bucket, is positive.
Statement (B): In the above case, work done by the gravitational force is negative.

Both A and B are true

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Both A and B are false

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A is true and B is false

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A is false and B is true

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Solution

The correct option is C Both A and B are true
A- Point of application of force is moving along the direction of applied force. Therefore, work done by man on the bucket is positive.

B- Displacement of bucket is opposite to the gravitational force, therefore negative work is done.

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Similar questions

Work done by gravitational force on a man, in lifting a bucket out of the well by rope tied to the bucket is

The sign of work done by a force on a body is important to understand. State carefully if the following quantities are positive or negative:

(a) work done by a man in lifting a bucket out of a well by means of a rope tied to the bucket.

(b) work done by gravitational force in the above case,

(d) work done by an applied force on a body moving on a rough horizontal plane with uniform velocity,

(e) work done by the resistive force of air on a vibrating pendulum in bringing it to rest.

Q. A bucket full of water is drawn up by a person. In this case the work done by the gravitational force is:

A bucket filled with water is lowered from terrace to the ground floor with the help of rope. Is the work done by the gravitational force is positive or negative?

Statement 1: A Force acting on a body increases its kinetic energy from 200 J to 400 J and this force does a positive work on the body.

Statement 2: A force does a positive work on an object when the displacement is in the direction of force itself.

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Statement (A): Work done by a man in lifting a bucket out of well, by means of a rope tied to the bucket, is positive.Statement (B): In the above case, work done by the gravitational force is negative.

The correct option is C Both A and B are trueA- Point of application of force is moving along the direction of applied force. Therefore, work done by man on the bucket is positive.B- Displacement of bucket is opposite to the gravitational force, therefore negative work is done.

Statement (A): Work done by a man in lifting a bucket out of well, by means of a rope tied to the bucket, is positive.
Statement (B): In the above case, work done by the gravitational force is negative.

The correct option is C Both A and B are true
A- Point of application of force is moving along the direction of applied force. Therefore, work done by man on the bucket is positive.

B- Displacement of bucket is opposite to the gravitational force, therefore negative work is done.