Post a New Question

physics

posted by .

a 50kg object is suspended by a rope over a pulley which is connected to a large mass of 61.3kg. The mass rests on a 30 degree inclined ramp. The coefficient of kinetic friction between the block and the ramp is .15. What is the 50kg object's acceleration?

  • physics -

    weight down the hill: 50g*SinTheta
    friction on the plane= 50g*mu*CosTheta

    now, assuming the block is going up the hill (friction in the direction of downhill)..

    61.3g-50g*sinTheta-50g*CosTheta=mass*a
    solve for a.

  • physics -

    would the acceleration be negative?

  • physics -

    Yes, if it is defined positive downhill. I believe Bob left on the coefficient of friction mu in the CosTheta term of the last equation.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question