Westonci.ca connects you with experts who provide insightful answers to your questions. Join us today and start learning! Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform. Connect with a community of professionals ready to help you find accurate solutions to your questions quickly and efficiently.

A pivoted beam supports a load P at one end and a load Q at the other end.

The weight of the beam can be ignored.


30 cm 70 cm


P Q


pivot


The beam is balanced.


Which row gives possible values for P and for Q?


P/N Q/N


A 21 7


B 21 9


C 30 10


D 30 70