What is the minimum number of weights you would need to weigh any weight from 1kg to 40 kg?

Like this we can do for all the weights till 40 kg (40 = 1 + 3 + 9 + 27). Hence, the 4 weights required are 1 kg, 3 kg, 9 kg and 27 kg.

Is Pan balance used for measuring weight?

The weighing pan is attached at the lowest point of the spring. An indicator shows the weight measurement and no manual adjustment of weights is necessary. An example of this type of balance would be the scale used in a grocery store to weigh produce.

How does an equal arm balance work?

The simplest type of balance, the equal-arm, or beam, balance, is an application of a lever. A long pointer attached at right angles to the beam at the fulcrum indicates zero on a scale when the beam is at rest parallel to a level surface.

Which pan of the balance is heavier?

The weights of 2 different objects can be immediately compared using a double-pan balance. An object is placed in each pan, and the heavier pan will drop while the lighter one rises. This will show which object is heavier, but it will not show the actual weights of the 2 objects.

What is the minimum number of weights you would need to weigh any weight from 1kg to 31 kg?

We will weight 1-1kg 30 times at last 1kg will be left. So, we will not measure that. So, minimum number for weighing will be 30.

What weight should I be for 121?

You need 5 weights: 1g, 3g, 9g, 27g, 81g. Example: to weigh 50g, have 81g on one side, and 27g, 3g and 1g (and your object) on the other.

What is equal arm balance?

The equal-arm balance consists of two identical pans hung from either end of a centrally suspended beam. The unequal-arm balance is made with one arm of the balance much longer than the other.

Which balance is used for the measurement of weight?

Physical balance is used to measure the weight of a body.

What are the possible number of weights that can be measured in a balance using just the following weights 4 kg 8 kg 16 kg 32 kg 64 kg?

You have a balance and the following weights: 4kg, 8kg, 16kg, 32kg, and 64kg. How many different possible weights can you measure with these items? It doubles each time! So with 4 weights there are 16 possibilities.

What is the fewest number of weights the inspector needs and what weights are needed to check the accuracy of scales from 1 oz through 15 oz?

What is the fewest number of weights the inspector needs, and what weights are needed to check the accuracy of scales from 1 oz through 15 oz? The inspector needs 4 weights.