2026 FULL QUESTIONS AND CORRECT
ANSWERS GRADED A+
●● Importance of eccentric forces.
Answer: they initiate spin in sports like:
1. tennis
2. table tennis
3. football
4. golf
●● 4 types of spin.
Answer: 1. top spin
2. back spin
3. hook
4. slice
●● Top spin.
Answer: -eccentric force is applied above COM
-spins downwards around transverse axis
-the top of ball spins in the same direction as the motion
, ●● Example of Top spin - Tennis.
Answer: a top spin forehand in tennis
●● Back spin.
Answer: -eccentric force is applied below COM
-spins upwards around transverse axis
-the top of ball spins in the opposite direction to the motion
●● Example of Back spin - Table tennis.
Answer: A backhand chop in table tennis
●● Side spin.
Answer: the ball rotates around the longitudinal axis (hook and slice)
●● Hook.
Answer: -eccentric force is applied to the right of COM
-front of ball spins to the left around longitudinal axis
●● Example of a Hook - Golf.
Answer: a golfer hits the right side of the ball to initiate a hook to avoid
trees