Question

A 50-g child riding a Ferris wheel with a radius of 10 m travels in a vertical cirele. The wheel completes one revolution every 10 s. If the seats of the wheel remains upright during the revolution, what is the magnitude of the force on the child by the seat at the highest point on the circular path? 3. A. 0.20 EN B. 0.29 EN C. 0.40 kN D. 0.49 kN E. 0.69 N A car enters a level, unbanked semi-circular curve of 300 m radius at a speed of 40 m s. The coefficient of friction betreen the tires and the road is 0.25. If the car maintains a constant speed of 40 m s. it will 4. A. amive safely at the end of the curve. B. tend to turm toward the center of the curve. C. tend to tum toward the outside of the curve. D. um toward the center of the curve for the first quarter-circle. then turn toward the ourside of the curve for the second quarter-circle. (Si-8) N and F-(5i +3) N. what is the fe onl forces acting cn a 20-kg mass are magaitude of te scceleration of the mass? 1. A 15ms B. 47ms C. 6.5ms D. 72ms E. 94ms A20-ton trnck collides with a 1.5-ton car and causes a lot of damage to the car. Since a lot of damage is done on the car 2. A. the force on the track is smaller than the force on the car. B. the force on the truck is greater than the force on the car. C. the force on the truck is equal to the force on the car. D. the car did not slow donmn during the collision. E. the trock did not slow dorn during the collision.

Answer 1

Solution 3 ree bedy diogram a of be seat at the hipheot point Grscular path is given belouo ethighest pont velo&ty o heseat is sentipetal fir ce tlad path hence Note on the is Fe Now equatonof motion of be higheat point is seat at Nis the "ADGMA+ eild by the seat .mv for ce exested On 50x g. 8 + Soxk 50 O. 69 KN 2 ITR T=#ma perid V 2 Tx 16 V 2TR