# Rowing Newtons Law

Topics: Classical mechanics, Rowing, Newton's laws of motion Pages: 3 (734 words) Published: March 2, 2013
2013

2013

Year 10 science
Year 10 science

Unit – forced to move – extended response task
Sarah Moslund 10L
Unit – forced to move – extended response task
Sarah Moslund 10L

Part A:
Rowing is a sport where athletes race against each other in boats the sport is done on rivers, on lakes or on the ocean, depending on the type of race and the racing discipline. The goal of rowing is to create enough power, that the boat will travel a long distance, with minimal work. Physics is an important part of rowing. Several rowing terms deal with how the boat will move through the water, by the power of the stroke. Power is the force that drives the boat. The distance travelled is the motion of the boat in the water. The boats are propelled by the reaction forces on the oar blades as they are pushed against the water. When the rower puts pressure on the oar handle it is transferred to the blade and applies pressure on the water, which is the forced that accelerates the boat forward. The rower works in a translational system: applying a force F and moving the handle with linear velocity v, hence producing power P (4.1) | P = F v |

During the drive the center off mass the whole systems moves forward and the center off pressure off the oar goes through the water. The reaction forces on the rowing blade is the sum of the drag and lift forces. Long term performance in rowing is difficult to analyse, and measure because it is significantly affected by weather conditions and differences over the courses. A rowing boat is not a solid body it contains three separate components: 1. The Crew, representing 70-80% of the total mass

2. The cox, representing 20-30% of the total mass
3. Oars representing less than 5%, which will be ignored So that means that there is more resistance in the boat than just the weight of the boat and rower.

The implication of Newton’s first law is that rowers have to apply force to overcome drag and also they have to...