Question

Name one improvement would you suggest for the apparatus to improve accuracy for a principle of moment expirement

Answer 1

Answer:

To plan and carry out experiments to verify the Principle of Moments using a suspended metre rule and attached weights.

The Principle of Moments states that when a body is balanced, the total clockwise moment about a point equals the total anticlockwise moment about the same point.

Equation

Moment =force F x perpendicular distance from the pivot d.

Moment = Fd

Apparatus

A uniform metre rule, retort stand, boss and clamp, two 100 g mass hangers and 12, 100g slotted masses, a g-clamp, three lengths of string.

Explanation:

Answer 2

Answer:

Suspend a metre rule horizontally from fixed support by means of a strong thread at O as shown. Now suspend two spring balances with some slotted weights W  

1

​  

 and W  

2

​  

 them on either side of the thread. The scale may tilt to one side. Now adjust the distances of two spring balances from the support by keeping one at A and the other at B in such a way that the scale again becomes horizontal.

Let the weight suspended on the right side of thread from the spring balance at A be W, at distance OA=l  

1

​  

, while the weight suspended on the left side of thread from the spring balance at B be W: at distance OB=l  

2

​  

.

The weight W  

1

​  

 tends to turn the scale clockwise. while the weight W  

2

​  

 tend to turn the scale anticlockwise.

Clockwise moment=W  

1

​  

×l  

1

​  

 

anticlockwise moment =W  

2

​  

×l  

2

​  

 

In equilibrium. when the scale is horizontal. it is found that  

Clockwise moment = Anticlockwise moment.  

i.e., W  

1

​  

×l  

1

​  

=W  

2

​  

×l  

2

​  

 

This verifies the principle of moments.

Explanation: