alleryStart learning →Why is a heavy suitcase easier to move on wheels than to drag?
AWheels cancel the pull of gravity
BWheels make the suitcase lighter
CRolling friction is far less than sliding
DWheels give the suitcase an extra push
Answer & Solution
Correct answer: C. Rolling friction is far less than sliding
Wheels turn sliding friction into a much smaller rolling friction, so less force is needed to move the suitcase.
Keep practising Force and energy
Browse all Force and energy questions for Olympiad (Class 5), or explore more Science topics.
Related questions
A child on a swing stops for an instant at the highest point. At that instant her energy iA ball bounces lower each time. Where has its missing energy gone?Which statement agrees with the law of conservation of energy?As a ball falls, position energy drops, motion energy rises and the total is constant. ThiThe Earth's climate and living things are driven mainly by radiant energy from theSunlight carries which form of energy?Food and fuel store energy that is released in chemical reactions. This is calledA stretched rubber band is held ready to be released. Which form of energy does it store?