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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: wildareal on October 16, 2010, 08:20:07 pm

Title: Equilibrium/Statics Question
Post by: wildareal on October 16, 2010, 08:20:07 pm

A body of mass 25kg rests in limiting equilibrium on a plane 30 degrees to the horizontal. If the plane is raised until it is at an angle of 60 degrees to the horizontal, find:

a) the least force acting up the plane required to keep the mass in equilibrium.
b) the horizontal force required to keep the body from slipping down the plane.

Title: Re: Equilibrium/Statics Question
Post by: wildareal on October 16, 2010, 08:36:02 pm

Hi Wildareal,

I'm not 100% sure, but

for
a) f=25sin(30)
b) f=25sin(60)

Since the particles are static.