When a ball rolls down an inclined plane , it gains speed because of

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SUMMARY

A ball rolling down an inclined plane accelerates due to the force of gravity acting along the slope. Conversely, when rolling up an inclined plane, the ball decelerates as gravity opposes its motion. On a horizontal surface, gravity does not contribute to the ball's motion since the gravitational force acts perpendicular to the direction of displacement, resulting in no work done against gravity. Instead, the only force at play is friction, which affects the ball's speed on a flat surface.

PREREQUISITES
  • Understanding of Newton's laws of motion
  • Basic principles of gravitational force
  • Concept of work and energy in physics
  • Friction and its effects on motion
NEXT STEPS
  • Study Newton's second law of motion in detail
  • Explore the concept of gravitational potential energy
  • Investigate the role of friction in different surfaces
  • Learn about inclined plane mechanics and its applications
USEFUL FOR

Students of physics, educators teaching mechanics, and anyone interested in understanding the dynamics of motion on inclined and horizontal surfaces.

alyafey22
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When a ball rolls down an inclined plane , it gains speed because of gravity .When rolling up an inclined plane, it loses speed because of gravity .Why doesn't gravity play a role when it rolls on a horizontal surface ?
 
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In an horizontal surface the force of the weight is perpendicular to the displacement so no work against gravity is done if that's what you mean 'gravity doesn't play a role'.
Only work against friction is done.
 

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