When a lift is accelerating up the weight of man standing on the floor of the lift is?

So, when a lift accelerates upwards, the apparent weight of the person inside it increases. So, when a lift accelerates downwards, the apparent weight of the person inside it decreases. R = m(g – g) = 0. Thus, the apparent weight of the man becomes zero.

What affects the reading of spring balance?

It consists of a spring fixed at one end with a hook to attach an object at the other. It works by Hooke’s Law, which states that the force needed to extend a spring is proportional to the distance that spring is extended from its rest position. Therefore, the scale markings on the spring balance are equally spaced.

When the lift is accelerating upward?

When the lift accelerates upward, a pseudo force will act on the body in the downward direction in addition to the weight. So the apparent weight will increase. If lift is going with uniform speed, the force acting on the body will be weight of the person. So the apparent weight will be same as the real weight.

When the lift is ascending up with an acceleration a the apparent weight of the person of mass m in the lift will be?

Case 1: If the lift is going up with acceleration a. So the man’s apparent weight inside it increases when the lift accelerates upwards.

What is spring balance on what principle does it work?

Hooke’s law
Spring balance works on the principle of Hooke’s law. Hooke’s law states that the strain of the material is proportional to the applied stress within the elastic limit of that material.

What does a spring balance measure how would you demonstrate the principle on which it works?

A spring balance is used to measure the weight of the body with in the elastic limits of its spring. Spring balance works on the principle of Hook’s law. Hooke’s law to say that the strain (deformation) of an elastic object or material is proportional to the stress applied to it.

What should be the magnitude and direction of acceleration during the motion of a lift when apparent weight of a body becomes twice its actual weight?

The overall acceleration of the person is upward (with the elevator). So the parameter ‘ma’ is positive (upward). Hence while going up & speeding up (acceleration a is positive) the apparent weight become twice the actual weight.

Why does the reading of spring balance increase with acceleration?

A spring balance and a physical balance are kept in a lift. In these balances equal masses are placed. lf now the lift starts moving upwards with constant acceleration, then The fictitious force will act downwards. So, the reading of spring balance will increase.

What type of balance is kept in a lift?

A spring balance and a physical balance are kept in a lift. In these balances equal masses are placed. If now the lift starts moving upwards with constant acceleration, then

What is the difference between spring balance and physical balance?

A spring balance and a physical balance are kept in a lift. In these balances equal masses are placed. If now the lift starts moving upwards with constant acceleration, then Physical balance is based on comparison.

How do you calculate the acceleration of an elevator?

It all has to do with the total force from the floor on the body inside the elevator. There are two components: 2) the force giving the acceleration = a*m where a is the acceleration of the elevator. The total force is the algebraic sum.