Forces on an inclined Plane

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# Forces on an inclined Plane - PowerPoint PPT Presentation

Forces on an inclined Plane. DN/RKS. kg, m, s Equations: Linear: Y=3x + 2 Quadratic: y= 2x 2 + 5x + 2 Exponential: y = 4 x Inverse: y = 2/x 3) (a) +4 m/s ( d) -3 m/s 2. 4) Distance, Displacement: 6m, 3 m east 15 m, 13 m approximately northeast 10 m, 6 m south

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### Forces on an inclined Plane

kg, m, s
• Equations:
• Linear: Y=3x + 2
• Quadratic: y= 2x2 + 5x + 2
• Exponential: y = 4x
• Inverse: y = 2/x

3) (a) +4 m/s (d) -3 m/s2

4) Distance, Displacement:
• 6m, 3 m east
• 15 m, 13 m approximately northeast
• 10 m, 6 m south

5) Speed, Velocity

• 3 m/s, 1.5 m/s east
• 7.5 m/s, 6.5 m/s approximately east
• 5m/s, 3m/s south
Units of velocity? m/s
• Units of acceleration? m/s2
• Units of force? N or mkg/s2
• Units of distance? m
• Formula for average acceleration? Change in velocity/time
• Formula for average velocity? Change in displacement/time
• Formula for average speed? Change in distance/time
• What is the constant acceleration of gravity on earth? -10m/s2
• One type of field force? gravity
• Three trig function ratios? Sin = O/H Cos = A/H Tan = O/A
Quick Refresh
• What is the acceleration of a 5.0kg box on a frictionless surface with an applied force of 8 N?
Quick Refresh
• What is the normal force if a 5.0kg box is resting on a table?
Notes:
• What is an inclined plane?
• A flat surface that makes an angle with the horizontal
Notes
• How will I find the normal force on an inclined plane?
• Draw free body diagarm
• Normal force is PERPENDICULAR to surface!
• Find force perpendicular to surface (usually just gravity)
• Fnormal=-Fperpendicular
Notes
• How will I find the acceleration of an object on an inclined plane?
• Draw free body diagarm
• Acceleration will be parallel to surface!
• Find forces parallel to surface
• F parallel = maparallel
What is the acceleration and the normal force of a 4.0 kg box on a frictionless surface at a 30⁰ angle?