Question

You are riding on your bicycle with inflated tyres. Your friend asks for a lift and sits on the carrier behind you

• A. The air pressure in the tyres increases
• B. The air pressure in the tyres decreases
• C. The air pressure in the tyres remains the same
• D. Nothing inthe system changes except the reaction of the ground
• E. Answer Required

Answer 1

The correct option is D Nothing inthe system changes except the reaction of the ground

nothing in the system changes except the reaction of the ground.

because the friend will exert its weight on the ground and the ground will exert normal reaction to balance it.