To continue our work on resolving forces

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Presentation transcript:

To continue our work on resolving forces Solve problems involving Resultant force = mass x acceleration Solve problems on an inclined plane

Example A go kart has a rocket attached to it of mass 78kg (with driver). The go kart is travelling at a constant speed of 4ms-1, at which point the rocket fires and the go kart experiences a driving force of 450N and drag forces of 280N. Calculate The resultant force acting on the go-kart The acceleration of the go-kart The final speed of the go-kart if it continues to accelerate at this rate for 5 seconds

You try Sheet of questions on resolving forces

Example – inclined plane Find the magnitudes of friction and normal reaction for the book at rest on the desk? Weight of the book is 8N Desk is tilted at an angle of 15°

Sidney is very disappointed when his sledge gets stuck half way down the hill! If the hill is sloped at an angle of 12° and the combined weight of Sidney and his sledge is 400N, calculate the magnitude of the normal reaction and frictional forces.

You try Sheet of questions on resolving forces on an inclined plane

Fast finishers Try the exam questions

Homework