A vertical string, suspended from a fixed point and havin...
A vertical string, suspended from a fixed point and having a small mass attached to the free end is set into oscillations. Which of the following statements about the system are correct? i. The potential energy of the mass is a minimum at the middle of the swing ii. Its kinetic energy is a maximum at the middle of the swing iii. The sum of the potential and kinetic energies is constant throughout the swing
i,ii and iii
i and ii only
ii and iii only
i and iii only
Correct answer is C
No explanation has been provided for this answer.
Which of the following does NOT cause a reduction of the surface tension of water? ...
The electrolyte used in the Nickel-Iron (NiFe) accumulator is ...
A man walks 1km due east and then 1 km due north His displacement? ...
The capacitance of a parallel-plate capacitor is increased by making the area of the plates ...
When connected to a mains of 250V, the fuse rating in the plug of an electric device of 1 KW is...