Homework Help: physics

Posted by Matt on Thursday, October 4, 2012 at 10:25pm.

A 5.20 package slides 1.57 down a long ramp that is inclined at 13.0 below the horizontal. The coefficient of kinetic friction between the package and the ramp is = 0.305

Calculate the work done on the package by friction.

Calculate the work done on the package by gravity.

Calculate the work done on the package by the normal force.

physics - Elena, Friday, October 5, 2012 at 2:50pm
W(fr) = F(fr) •s=μ•mg•cosα•s=0.305•5.2•9.8•cos13°•1.57 =
W(gr) = m•g•h=m•g•s•sinα=5.2•9.8•1.57•sin13° = …
W(norm) =N•s•cos90°=0

Answer this Question

Related Questions

physics - A 5.30 kg package slides 1.57 m down a long ramp that is inclined at ...
physics - A 5.20 package slides 1.57 down a long ramp that is inclined at 13.0 ...
physics - A 5.40 Kg package slides 1.47 meters down a long ramp that is inclined...
physics - An 8.00kg package in a mail-sorting room slides 2.00 m down a chute ...
physics - An 8.00kg package in a mail-sorting room slides 2.00 m down a chute ...
physics - two packages at ups start sliding down the 20 degrees ramp. package a ...
Phsyics - A 44.0kg seal at an amusement park slides from rest down a ramp into ...
Physics - A mass sits at the top of a 2 meter long ramp inclined at an angle of ...
Physics - An 8.70 kg block slides with an initial speed of 1.56 m/s **down** a ...
Physics - An 8.74-kg block slides with an initial speed of 1.52 m/s down a ramp ...

For Further Reading

First Name:
School Subject:
Answer: