355778
A block of mass slides over a distance of on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in ) is
1 4200
2 4000
3 4500
4 3900
Explanation:
Work done against friction Work done by friction
JEE - 2024
PHXI06:WORK ENERGY AND POWER
355779
Work done by force of friction
1 Can be zero
2 Can be positive
3 Can be negative
4 Any of the above
Explanation:
Conceptual Question
PHXI06:WORK ENERGY AND POWER
355780
A weight lifter jerks vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively
1
2
3
4
Explanation:
Work done in lifting through height . No work is done in holding the weight at height . Hence total work done Hence answers are respectively , zero.
PHXI06:WORK ENERGY AND POWER
355781
A particle is moved from a position to a position metre under the action of a force . The workdone is equal to
1
2
3
4
Explanation:
We know that,
PHXI06:WORK ENERGY AND POWER
355782
A force of magnitude acts on the free end of the cord. The weight moves up slowly by a distance . How much work is done on the weight by the rope connecting pulley and weight?
1
2
3
4 None of these
Explanation:
We are applying force therefore tension in string is equal to . Hence force acting on weight is 2 upward, and displacement is upward. Hence (work done on weight)
355778
A block of mass slides over a distance of on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in ) is
1 4200
2 4000
3 4500
4 3900
Explanation:
Work done against friction Work done by friction
JEE - 2024
PHXI06:WORK ENERGY AND POWER
355779
Work done by force of friction
1 Can be zero
2 Can be positive
3 Can be negative
4 Any of the above
Explanation:
Conceptual Question
PHXI06:WORK ENERGY AND POWER
355780
A weight lifter jerks vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively
1
2
3
4
Explanation:
Work done in lifting through height . No work is done in holding the weight at height . Hence total work done Hence answers are respectively , zero.
PHXI06:WORK ENERGY AND POWER
355781
A particle is moved from a position to a position metre under the action of a force . The workdone is equal to
1
2
3
4
Explanation:
We know that,
PHXI06:WORK ENERGY AND POWER
355782
A force of magnitude acts on the free end of the cord. The weight moves up slowly by a distance . How much work is done on the weight by the rope connecting pulley and weight?
1
2
3
4 None of these
Explanation:
We are applying force therefore tension in string is equal to . Hence force acting on weight is 2 upward, and displacement is upward. Hence (work done on weight)
355778
A block of mass slides over a distance of on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in ) is
1 4200
2 4000
3 4500
4 3900
Explanation:
Work done against friction Work done by friction
JEE - 2024
PHXI06:WORK ENERGY AND POWER
355779
Work done by force of friction
1 Can be zero
2 Can be positive
3 Can be negative
4 Any of the above
Explanation:
Conceptual Question
PHXI06:WORK ENERGY AND POWER
355780
A weight lifter jerks vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively
1
2
3
4
Explanation:
Work done in lifting through height . No work is done in holding the weight at height . Hence total work done Hence answers are respectively , zero.
PHXI06:WORK ENERGY AND POWER
355781
A particle is moved from a position to a position metre under the action of a force . The workdone is equal to
1
2
3
4
Explanation:
We know that,
PHXI06:WORK ENERGY AND POWER
355782
A force of magnitude acts on the free end of the cord. The weight moves up slowly by a distance . How much work is done on the weight by the rope connecting pulley and weight?
1
2
3
4 None of these
Explanation:
We are applying force therefore tension in string is equal to . Hence force acting on weight is 2 upward, and displacement is upward. Hence (work done on weight)
NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXI06:WORK ENERGY AND POWER
355778
A block of mass slides over a distance of on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in ) is
1 4200
2 4000
3 4500
4 3900
Explanation:
Work done against friction Work done by friction
JEE - 2024
PHXI06:WORK ENERGY AND POWER
355779
Work done by force of friction
1 Can be zero
2 Can be positive
3 Can be negative
4 Any of the above
Explanation:
Conceptual Question
PHXI06:WORK ENERGY AND POWER
355780
A weight lifter jerks vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively
1
2
3
4
Explanation:
Work done in lifting through height . No work is done in holding the weight at height . Hence total work done Hence answers are respectively , zero.
PHXI06:WORK ENERGY AND POWER
355781
A particle is moved from a position to a position metre under the action of a force . The workdone is equal to
1
2
3
4
Explanation:
We know that,
PHXI06:WORK ENERGY AND POWER
355782
A force of magnitude acts on the free end of the cord. The weight moves up slowly by a distance . How much work is done on the weight by the rope connecting pulley and weight?
1
2
3
4 None of these
Explanation:
We are applying force therefore tension in string is equal to . Hence force acting on weight is 2 upward, and displacement is upward. Hence (work done on weight)
355778
A block of mass slides over a distance of on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in ) is
1 4200
2 4000
3 4500
4 3900
Explanation:
Work done against friction Work done by friction
JEE - 2024
PHXI06:WORK ENERGY AND POWER
355779
Work done by force of friction
1 Can be zero
2 Can be positive
3 Can be negative
4 Any of the above
Explanation:
Conceptual Question
PHXI06:WORK ENERGY AND POWER
355780
A weight lifter jerks vertically through 1.5 meters and holds still at that height for two minutes. The works done by him in lifting and in holding it still are respectively
1
2
3
4
Explanation:
Work done in lifting through height . No work is done in holding the weight at height . Hence total work done Hence answers are respectively , zero.
PHXI06:WORK ENERGY AND POWER
355781
A particle is moved from a position to a position metre under the action of a force . The workdone is equal to
1
2
3
4
Explanation:
We know that,
PHXI06:WORK ENERGY AND POWER
355782
A force of magnitude acts on the free end of the cord. The weight moves up slowly by a distance . How much work is done on the weight by the rope connecting pulley and weight?
1
2
3
4 None of these
Explanation:
We are applying force therefore tension in string is equal to . Hence force acting on weight is 2 upward, and displacement is upward. Hence (work done on weight)