The magnitude of a force exerted by a small engine is measured to be (pound-force)

PHYSICS · Multi-part · CBSE · Physics · Units and Measurements · Units and Measurements

Problem

The magnitude of a force exerted by a small engine is measured to be

12\,\text{lbf}

(pound-force). Use the information given below to answer the following. (i) Write the dimensional formula for force. (ii) Given that

1\,\text{lb}=0.4536\,\text{kg}

and standard acceleration due to gravity

g=9.8\,\text{m}\,\text{s}^{-2}

, convert

12\,\text{lbf}

into newtons. (iii) Using

1\,\text{dyne}=10^{-5}\,\text{N}

, determine the numerical value of the same force in dynes.