Calculate velocity using work and energy - Mechanics Dynamics

[mm391]

Homework Statement

A wagon having a total mass (including its wheels) of 1000 kg, has four wheels each of mass 100 kg and each having a radius of 0.5 m and a radius of gyration of 0.45 m. The wagon starts from rest at the top of an incline of 1 in 10 (sine). If there is a resistance to motion (assumed constant) of 50 N, determine the velocity of the wagon after it has moved a distance of 300 m.

Homework Equations

1/2*m*v^2
1/2*Iω^2

The Attempt at a Solution

No idea how to start, sorry.

 

[tiny-tim]

hi mm391!

(try using the X² button just above the Reply box )

A wagon having a total mass (including its wheels) of 1000 kg, has four wheels each of mass 100 kg and each having a radius of 0.5 m and a radius of gyration of 0.45 m. The wagon starts from rest at the top of an incline of 1 in 10 (sine). If there is a resistance to motion (assumed constant) of 50 N, determine the velocity of the wagon after it has moved a distance of 300 m.
…
No idea how to start, sorry.

start by finding the formula for the kinetic energy of the wagon (and wheels) at speed v …

what is it? ​