Question

It is easier to pull a lawn roller then to push it because pulling:

• A. involves sliding friction
• B. involves rolling friction
• C. increases the effective weight
• D. decreases normal reaction

Answer 1

Answer: (B)

involves rolling friction

When we push a lawn roller , the normal component of force applied by us increases the effective weight of roller , on the other hand , in pulling normal component of our force decreases the effective weight of roller . Therefore it is easier to pull a roller than pushing it .