- #1

SPH4U

- 5

- 0

## Homework Statement

Jarek is motoring along when he spots Chris and Michelle thumbing a ride back to Winnipeg. He hitches them up to two ropes and accelerates westward towards Winnipeg, He pulls with a constant force on a rope which slopes down 30 degrees to Chris's belt. A second rope attached to Chris' belt pulls Michelle's belt. Assume there is no friction force between the level snow-covered road and their skis and that the only motion is their acceleration west. Calculate the tension in the rope joining Michelle and Chris. Mass of Chris = 70Kg; mass of Michelle = 50Kg; mass of Jarek = 60Kg; mass of motorcycle = 100Kg.

## Homework Equations

Given:

Chris= 70Kg

Michelle= 50Kg

Jarek= 60Kg + 100Kg; 160Kg

a= constant

Fnet = mg

## The Attempt at a Solution

Fnet = mg

= (50Kg)(9.8N/Kg)

= 490N

Fnet = Ff + Fa

Ff = 0

Fa = 490N [W]

It seems a little too simple, can someone please check over my work? Thanks, I really appreciate it.