a body with a body with a mass of 0.8 kg is on a plane incline at 30 degree to the horizontal what first must we apply on the body so that it slide with an acceleration of 0.1 metre per second
Answer (1)
28th Oct, 2019
The accelerating force F is the weight force's component of m*g*sin(angle) minus friction force of mu*m*g*cos(angle). The mu is the friction coeff.
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So F = m* a. = >.
m*g*sin(angle) - mu*m*g*cos(angle) = m*a
So the friction force is Ffr = mgsin(angle) - ma
Ffr = mgsin(angle) - ma = m(gsin(angle)-a))
Ffr = .5*(9.8*0.5–3} = 1.9/2 = 0.95 [N]
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