Recent content by jiwon

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The Attempt at a Solution 8 kg block: T-m2g = -m2a T-m1g sin(theta)- u m1g cos (theta) = m1a T -m2g=-m2a subtract equations: -m1gsin(theta)-umigcos(theta) + m2g = (m1+m2)a or a = g(m2-m1sin(theta)-m2cos(theta)/(m1+m2) substituting values: a=g(8-10sin(30)-0.2(10)cos30)/(18) a=0.69m/s/s...

Homework Statement A 1500-kg car is dragged up a 20 degree rough ramp by a tow truck. The coefficient of static and kinetic friction between the car and the ramp are 0.8 and 0.5 respectively. Assume that wheels are locked. *Note: picture of a sedan pulled up a ramp with a rope. Find the...

Homework Statement A boy pushes a 5-kg machine along a horizontal floor with a force, P, which makes an angle, theta=30 degree below the horizontal. The coefficients of static and kinetic friction between the machine and the floor are 0.5 and 0.3 respectively. The machine is initially at rest...