Question

Suppose your bathroom scale reads your mass as 70 kg, with a 3% uncertainty. What is the uncertainty in your mass in kilograms

Answer 1

The uncertainty of the mass in kilograms is 2.1 kg.

What is the uncertainty if the mass in kilograms?

In taking measurements of quantities, there is always an in inherent error that results known as uncertainty.

Every instrument has an uncertainty level.

Given the percentage uncertainty as 3%.

• Uncertainty = percentage uncertainty × mass

Uncertainty = 3% × 70kg

Uncertainty = 2.1 kg

Therefore, the uncertainty in kilograms is 2.1 kg.

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