The suction cups used by burglars seen in movies are about 10 cm in diameter, and it seems reasonable that one of these might be able to support the weight of an 80-kg student. The area of a 10-cm cup is approximately: π(0.05 m)2 ≅ 8 × 10–3 m2
The suction cups used by burglars seen in movies are about 10 cm in diameter, and it seems reasonable that one of these might be able to support the weight of an 80-kg student. The area of a 10-cm cup is approximately: π(0.05 m)2 ≅ 8 × 10–3 m2