Help on a few more?? Hi guys, I still need some help with physics. If you guys could help me get a good grade, it would be soooooooooo appreciated. Okay, this one I've been working at for a while: A 17.0 kg monkey hangs from a cord suspended from the ceiling of an elevator. The cord can withstand a tension of 220 N and breaks as the elevator accelerates. What was the elevator's min acceleration (magnitude & direction?) This one too: What is the smallest raduis of an unbanked curve around which a bicyclist can travel if her speed is 18 mph and the coefficient of static friction between the tires and the road is .32? One last one: A get palne starts from rest of the runway and accelerates for take off at 2.3 m/s^2. It has two jet engines, each of which exerts a thrust of 1.4 x 10^5 N (approx 16 tons) What's the weight of the plane?? If you guys could help, I would be ETERNALLY grateful!! Thanks so much for helping me!!!!