Tag: physics

The lever should be turned gently in order to prevent the knife edges from chipping.

The mass of the resting point gives the correct mass of the body if the resting point of a physical balance coincides with the zero resting point.

The conditions that a true balance must satisfy are that both arms must have equal lengths made up of same material and mass of the both pans must be same. Colour of arms has nothing to do with the measurement of mass.

Only dry and cold objects must be kept on the pan while wet and hot objects are not kept on the pan.

Spring balance is used to measure the weight of the object. To do so, the object is hung on the spring which in result stretches the spring. The spring's extension is proportional to the weight which gives the weight of the object.

Spring balance is used to measured the weight of the substance.

Spring balance is used to measure the weight of the object. The final position of a pointer of a spring balance gives the weight of the object.

The above statement is true that the pointer of the spring balance must point at the zero mark of the scale when no load is applied to it.

Beam balance is used to measure the weight.

Spring balance was invented by  British physicist Robert Hooke in 1660. Spring balance was invented to measure the weight of the substance.