A bullock-cart wheel is rolling on a level road to the right with centre speed v as shown. P and Q are its highest and lowest points. Which statement is correct?

Question

G1 Physics · Accepted Answer

Step 1: In rolling without slipping, the rim speed relative to centre is v. Step 2: At the top, velocities add and v(P)=2v; at contact point Q, they cancel and v(Q)=0. Step 3: Thus P moves faster. Final answer: A — P moves faster than Q.