A sphere rolls without slipping on a flat surface. If it has a radius R and roll

Practice Questions

Q1
A sphere rolls without slipping on a flat surface. If it has a radius R and rolls with a speed v, what is its angular speed?
  1. v/R
  2. 2v/R
  3. v/2R
  4. v²/R

Questions & Step-by-Step Solutions

A sphere rolls without slipping on a flat surface. If it has a radius R and rolls with a speed v, what is its angular speed?
  • Step 1: Understand that a sphere rolling without slipping means that the point of contact with the surface is not sliding.
  • Step 2: Recall the relationship between linear speed (v) and angular speed (ω) for rolling objects.
  • Step 3: The formula that relates linear speed to angular speed is ω = v/R, where R is the radius of the sphere.
  • Step 4: Identify the values: you have the speed (v) and the radius (R) of the sphere.
  • Step 5: Use the formula ω = v/R to calculate the angular speed.
  • Rolling Motion – The relationship between linear speed and angular speed for objects rolling without slipping.
  • Angular Speed – The rate of rotation of an object, defined as the angle rotated per unit time.
  • Radius and Velocity Relationship – The formula ω = v/R shows how the radius of the sphere affects its angular speed.
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