What force must the man exert to keep platform in equilibrium. (Ignore the pen markings.)
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The force exerted to keep a platform in equilibrium depends on it’s mass.
As F(NET force)=m(mass) * a(acceleration)
Fx = m * g(9.8)
Fy = T(tension of rope)
To Body be in equilibrium ,
Fx - Fy = 0
Fx = Fy
mg = T
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