Question

> 2) The diagram shows the start of a roller coaster. A car with a total mass Mis pulled up the first hill of height H. н Start If the chain pulling the car up the hill does a total work W to move the car from the start to the top of the hill, what is the velocity of the car at the top of the hill? R Friction and drag can be neglected. D 3) A spinning wheel is placed on a horizontal surface and allowed to roll up a slope at an angle 0. The initial angular velocity is w1, and the wheel rolls without slipping from the initial time, shown in the diagram, until it reaches its highest point on the slope. What is the distance, D, that the wheel rolls up the slope?

Answer 1

2). Applying work energy Theorem. E WORK done by al forces ДКЕ, > Wchain to Ман gravity= Ko Ef -KE » W my v 2 2 7 ve. 2W - MgH M n V- 2 (Wom MgH m. Ang.

.اس Wheel rolls without slepping R=vi v=Rw ?? Rerodius. theorem I work done Akot Applying work energy by all forces » Wgravity >f-mg Bino) Da hé mwen 4 Iw3,2) a mga Bina = + m2 10,22 KARE-KIE 2 my, 2 go sino + ve xw, ?) u é (v2 2 wo, 2 u 2 V1 goine. Arip