Work, Energy and Power questions
712 published questions with worked solutions.
- The potential energy of a certain spring when stretched through a distance 'S' is 10 joule. The amount of work that must be done...
- The work done by a force F = (−6x³î) N, in displacing a particle from x = 4 m to x = −2 m, is
- A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the table. The total...
- A particle is moving under the influence of a force given by F = kx, where k is a constant and x is the distance moved. The...
- Which of the following is not a conservative force? [Kerala PMT 2005]
- A spring with spring constant k is extended from x = 0 to x = x₁. The work done will be
- The potential energy of a body is given by, U = A − Bx² (where x is the displacement). The magnitude of force acting on the...
- The potential energy of a particle in a force field is U = A/r² − B/r, where A and B are positive constants and r is the distance...
- A spring with spring constant k, when stretched through 1 cm, has potential energy U. If it is stretched by 4 cm, the potential...
- A spring of 40 mm long is stretched by the application of a force. If 10 N force is required to stretch the spring through 1 mm,...
- A body of mass 3 kg is under a force, which causes a displacement in it given by S = t³/3 (in m). Find the work done by the force...
- If a long spring is stretched by 0.02 m, its potential energy is U. If the spring is stretched by 0.1 m, the potential energy...
- A spring when stretched by 2 mm has potential energy 4 J. If it is stretched by 10 mm, its potential energy is equal to
- When a 1.0 kg mass hangs attached to a spring of length 50 cm, the spring stretches by 2 cm. The mass is pulled down until the...
- A spring of spring constant 5 × 10³ N/m is stretched initially by 5 cm from the unstretched position. Then the work required to...
- When a spring is stretched by 2 cm, it stores 100 J of energy. If it is stretched further by 2 cm, the stored energy will be...
- A body of mass 0.1 kg moving with a velocity of 10 m/s hits a spring (fixed at the other end) of force constant 1000 N/m and...
- A position dependent force F = 7 − 2x + 3x² newton acts on a small body of mass 2 kg and displaces it from x = 0 to x = 5 m. The...
- A mass of 0.5 kg moving with a speed of 1.5 m/s on a horizontal smooth surface, collides with a nearly weightless spring of force...
- Two springs A and B are identical but A is harder than B (kA > kB). Let WA and WB represent the work done when the springs are...
Other chapters
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