BPSC CCE Prelims
Force and Friction Previous Year Questions (PYQs)
Practice solved questions for Force and Friction with detailed step-by-step solutions, key insights, and trend analysis for BPSC CCE PRELIMS.
Solved Previous Year Questions
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Which of the following is a non-contact force?
Detailed Explanation:
Non-contact forces act on objects without physical touch between them, examples include magnetic force, gravitational force, and electrostatic force.
Magnetic force operates through a magnetic field and can attract or repel objects from a distance without direct contact.
Frictional force and impact force both require physical contact between surfaces or objects, making them contact forces.
Ball bearings are used to convert static friction into
Detailed Explanation:
Ball bearings contain small spherical balls that convert static friction (friction between surfaces at rest) into rolling friction.
Rolling friction is significantly lower than sliding friction, allowing wheels, gears, and machinery to move smoothly and efficiently with reduced energy loss.
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