Question

explain the work of beam balance with diagram

Answer 1

Principle of the. beam balance

We are now able to explain the principle of the beam balance, the construction which was discussed in chapter I, The unknown mass m1, is placed in the left-ha pan and standard masses, rn-, are placed in the right-hand pan to obtain equilibrium (Fig. 6.1 0). The balance has been constructed so that the distances, d, of the pans from centre beam bearing are equal. Thus equating moments

Principle of the. beam balance

From this we see that the balance measures mass, not weight, and it is quite independent of the value of g. Furthermore, it will correctly measure mass anywhere so long the masses concerned possess weight. Should we want to know the weight of the body we could calculate it by multiply mg the mass by the local value of g.

Principle of the. beam balance

We are now able to explain the principle of the beam balance, the construction which was discussed in chapter I, The unknown mass m1, is placed in the left-ha pan and standard masses, rn-, are placed in the right-hand pan to obtain equilibrium (Fig. 6.1 0). The balance has been constructed so that the distances, d, of the pans from centre beam bearing are equal. Thus equating moments

Principle of the. beam balance

From this we see that the balance measures mass, not weight, and it is quite independent of the value of g. Furthermore, it will correctly measure mass anywhere so long the masses concerned possess weight. Should we want to know the weight of the body we could calculate it by multiply mg the mass by the local value of g.

Answer 2

It is a device used for the determination of the mass of a body under gravitation. It doesn't directly measures the mass. it uses the fact that the gravitational force on the object is proportional to its mass. There are two stirrups at the end of the beam which carries two scale pans of equal masses along with adjusting nuts. these can be adjusted to make the pointer oscillate within the scale when the balance is raised.

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