Work
PHXI06:WORK ENERGY AND POWER

355778 A block of mass 100kg slides over a distance of 10m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in J ) is

1 4200
2 4000
3 4500
4 3900
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
PHXI06:WORK ENERGY AND POWER

355781 A particle is moved from a position r1=(3i^+2j^6k^)m to a position r2=(14i^+13j^9k^) metre under the action of a force F=(4i^+j^+3k^)N. The workdone is equal to

1 32J
2 64J
3 96J
4 46J
PHXI06:WORK ENERGY AND POWER

355782 A force of magnitude F acts on the free end of the cord. The weight moves up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?
supporting img

1 Fh/2
2 Fh
3 2Fh
4 None of these
PHXI06:WORK ENERGY AND POWER

355778 A block of mass 100kg slides over a distance of 10m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in J ) is

1 4200
2 4000
3 4500
4 3900
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
PHXI06:WORK ENERGY AND POWER

355780 A weight lifter jerks 220kg 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 220J,330J
2 3234J,0
3 2334J,10J
4 0,3234J
PHXI06:WORK ENERGY AND POWER

355781 A particle is moved from a position r1=(3i^+2j^6k^)m to a position r2=(14i^+13j^9k^) metre under the action of a force F=(4i^+j^+3k^)N. The workdone is equal to

1 32J
2 64J
3 96J
4 46J
PHXI06:WORK ENERGY AND POWER

355782 A force of magnitude F acts on the free end of the cord. The weight moves up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?
supporting img

1 Fh/2
2 Fh
3 2Fh
4 None of these
PHXI06:WORK ENERGY AND POWER

355778 A block of mass 100kg slides over a distance of 10m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in J ) is

1 4200
2 4000
3 4500
4 3900
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
PHXI06:WORK ENERGY AND POWER

355780 A weight lifter jerks 220kg 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 220J,330J
2 3234J,0
3 2334J,10J
4 0,3234J
PHXI06:WORK ENERGY AND POWER

355781 A particle is moved from a position r1=(3i^+2j^6k^)m to a position r2=(14i^+13j^9k^) metre under the action of a force F=(4i^+j^+3k^)N. The workdone is equal to

1 32J
2 64J
3 96J
4 46J
PHXI06:WORK ENERGY AND POWER

355782 A force of magnitude F acts on the free end of the cord. The weight moves up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?
supporting img

1 Fh/2
2 Fh
3 2Fh
4 None of these
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PHXI06:WORK ENERGY AND POWER

355778 A block of mass 100kg slides over a distance of 10m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in J ) is

1 4200
2 4000
3 4500
4 3900
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
PHXI06:WORK ENERGY AND POWER

355780 A weight lifter jerks 220kg 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 220J,330J
2 3234J,0
3 2334J,10J
4 0,3234J
PHXI06:WORK ENERGY AND POWER

355781 A particle is moved from a position r1=(3i^+2j^6k^)m to a position r2=(14i^+13j^9k^) metre under the action of a force F=(4i^+j^+3k^)N. The workdone is equal to

1 32J
2 64J
3 96J
4 46J
PHXI06:WORK ENERGY AND POWER

355782 A force of magnitude F acts on the free end of the cord. The weight moves up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?
supporting img

1 Fh/2
2 Fh
3 2Fh
4 None of these
PHXI06:WORK ENERGY AND POWER

355778 A block of mass 100kg slides over a distance of 10m on a horizontal surface. If the coefficient of friction between the surfaces is 0.4 then the work done against friction (in J ) is

1 4200
2 4000
3 4500
4 3900
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
PHXI06:WORK ENERGY AND POWER

355780 A weight lifter jerks 220kg 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 220J,330J
2 3234J,0
3 2334J,10J
4 0,3234J
PHXI06:WORK ENERGY AND POWER

355781 A particle is moved from a position r1=(3i^+2j^6k^)m to a position r2=(14i^+13j^9k^) metre under the action of a force F=(4i^+j^+3k^)N. The workdone is equal to

1 32J
2 64J
3 96J
4 46J
PHXI06:WORK ENERGY AND POWER

355782 A force of magnitude F acts on the free end of the cord. The weight moves up slowly by a distance h. How much work is done on the weight by the rope connecting pulley and weight?
supporting img

1 Fh/2
2 Fh
3 2Fh
4 None of these