1.

a truck is carry a box of mass `m=50kg` on its flat horizontal rough surface with coefficient of friction `mu=0.3` . It is crossing a circular track of radius 27m. What is the maximum speed of the truck so thet the box does not slide from the truck while moving on the circular path? A. 18 km/hrB. 36 km/hrC. 32.4 km/hrD. None of these

Answer» Correct Answer - C
`mu mg=m(v^(2))/(R)`
`v=sqrt(mugR)=sqrt(0.3(10)27)=9m//s=32.4km//hr`


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