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.
Can the moment of force be zero even if force is not zero?If so,when?
Two particles each having a mass of 5 g and charge 10^-7 C stay in limiting equilibrium on a horizontal rough surface with a separation of 10 cm between them. what is the co-efficient of friction of the surface and the particle.
The iron gate of a building is 3m broad. It cn be opened by applying a force of 100N at the middle of the gate. Calculate the least force required to open this gate. Where should the force be applied?
What is the sign convention fot the moment of a force?
a free pith ball of 8g carries a positive charge of 5*10-8c. what must be the nature and magnitude of charge that should be given to a second pith ball fixed 5cm vertically elow the former pith ball so that the upper pith ball is stationary?
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