Question

What is spring balance? Write its construction and working with the help of diagram?

Answer 1

Working principle of spring balance

1.A spring balance is used for measuring the weight of an object. It has a spring, one end of which is fixed. The other end of the spring is attached to a hook to hold an object. The steel spring is enclosed in a metallic case. There is a pointer, which is attached to the spring. The pointer moves over a scale marked on the metallic case.

2.One should always check that the pointer points at the zero mark of the scale under no-load condition.

  3.When a load is attached to the hook, the spring gets elongated because of the weight of the body. Along with the spring, the pointer also moves over the scale. The final position of the pointer gives the weight of the body.

Answer 2

=A spring balance is used for measuring the weight of an object. It has a spring, one end of which is fixed. =The other end of the spring is attached to a hook to hold an object. The steel spring is enclosed in a metallic case.

=There is a pointer, which is attached to the spring. The pointer moves over a scale marked on the metallic case.When a load is attached to the hook, the spring gets elongated because of the weight of the body. Along with the spring, the pointer also moves over the scale.

= The final position of the pointer gives the weight of the body.