Work, Power and EnergyHard
Question
A stone of mass m is tied to a string of length l at one end and by holding second end it is whirled into a horizontal circle, then work done will be -
Options
A.0
B.
C.(mg). 2πl
D.
More Work, Power and Energy Questions
If the momentum of a body is incresed n times, its kinetic energy increases....Two-point charges of 1 nC and 2 nC are placed at the two corners of equilateral triangle of side 3 cm . The work done in...A vessel contains a mixture of one mole of oxygen and two moles of nitrogen at 300 K. The ratio of the average rotationa...A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t i...An athlete in the olympic games covers a distance of 100 m in 10 s. His kinetic energy can be estimated to be in the ran...