Work, Energy and Power questions
712 published questions with worked solutions.
- Two persons A and B perform same amount of work in moving a body through a certain distance d with application of forces acting...
- A block moving horizontally on a smooth surface with a speed of 40 ms^ -1 splits into two equal parts. If one of the parts moves...
- Two particles having masses 4 g and 16 g respectively are moving with equal kinetic energies. The ratio of the magnitudes of...
- A small bob tied at one end of a thin string of length 1m is describing a vertical circle so that the maximum and minimum tension...
- The potential energy (U) of a diatomic molecule is a function dependent on r (interatomic distance) as U= r^ 10 - r^2 -3 where, a...
- A force of F = (5y + 20) j N acts on a particle. The workdone by this force when the particle is moved from y = 0 m to y = 10 m...
- A pendulum bob has a speed of 3 m/s at its lowest position. The pendulum is 50 cm long. The speed of bob, when the length makes...
- A uniform chain of length 3 meter and mass 3 kg overhangs a smooth table with 2 meter laying on the table. If k is the kinetic...
- A particle experiences a variable force F = (4x i + 3y^2 j) in a horizontal x-y plane. Assume distance in meters and force is...
- A stone of mass m tied to a string is being whirled in a vertical circle with a uniform speed. The tension in the string is
- Potential energy as a function of r is given by U = A/r^ 10 - B/r^ 5 , where r is the interatomic distance, A and B are positive...
- A 100 g of iron nail is hit by a 1.5 kg hammer striking at a velocity of 60 ms^ -1 . What will be the rise in the temperature of...
- A body of mass 0.5 kg travels on straight line path with velocity v = (3x^ 2 + 4) m/s. The net workdone by the force during its...
- A 0.5 kg block moving at a speed of 12 ms^ -1 compresses a spring through a distance 30 cm when its speed is halved. The spring...
- A force F = (5 + 3y^2) acts on a particle in the y-direction, where F is in newton and y is in meter. The work done by the force...
- A small particle moves to position 5 i -2 j + k from its initial position 2 i +3 j -4 k under the action of force 5 i +2 j +7 k...
- The work done on a particle of mass m by a force, K [ x (x^2 + y^2)^ 3/2 i + y (x^2 + y^2)^ 3/2 j ] (K being a constant of...
- A particle of mass 0.2 kg is moving in one dimension under a force that delivers a constant power 0.5 W to the particle. If the...
- A bob of mass m, suspended by a string of length l_1, is given a minimum velocity required to complete a full circle in the...
- How is the kinetic energy of a moving object affected if the net work done on it is positive ?
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Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration