Work, Power and EnergyHard
Question
The M.I. of a body about the given axis is 1.2 kg × m2 initially the body is at rest. In order to produce a rotational kinetic energy of 1500 J, an angular acceleration of 25 rad/sec2 must be applied about that axis for duration of
Options
A.4 sec
B.2 sec
C.8 sec
D.10 sec
More Work, Power and Energy Questions
In a simple harmonic oscillator, at the mean position...A ball is dropped from a height of 10m. If 40% of its energy is lost on collision with the earth then after collision th...The graph between potential energy U and displacement X in the state of stable equilibrium will be -...Choose CORRECT statement(s) regarding the photoelectric effect :-...An ideal heat engine working between temperature T1 and T2 has an efficiency η, the new effciency if both the sourc...