A uniform metre scale of mass 80g is to be balanced at the 70 cm marks. Find from where must a mass of 60g be suspended to do so.
A body moving with a constant acceleration travels the distance 3m and 8m respectively in 1s and 2s. Calculate (i) the initial velocity and (ii) the acceleration of the body.
Answer:(i) 2 m/s(ii) 2 m/s2
2 charges,of magnitude 5nC and -2nC are placed at points(2 cm,0,0) (x cm,0,0) in a region of space where there is no external field. If the Electrostatic Potential energy of the system is -0.5μJ,what is the value of x?
Can the moment of force be zero even if force is not zero?If so,when?
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