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Units And Measurement

Question

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A force F is applied on a body at a point whose position vector is $rightwards arrow for straight r of$ . What is the turning effect due to radial component of force?

Solution

straight theta space equals space 0 to the power of straight o

for force due to the radial component. Therefore, the turning effect of the radial component of force is zero.

Some More Questions From Units and Measurement Chapter

What are the two main required characteristics of a unit?

Can we use same units for different physical quantities?

Can we use different units to measure same physical quantity?

To measure a physical quantity X, the unit U is repeatedly used for n times. What is the magnitude of physical quantity?

Does the numerical factor in the quantitative measurement depend on the system of unit used?

Is one unit sufficient to measure a physical quantity?

Can a physical quantity have two or more units? Give example.

What are fundamental quantities?

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