Question

please explain the answer

6) A small ball of mass m sit atop a large hemisphere (a dome) of radius R. The ball begins to roll down the hemisphere. The location of the ball on the hemisphere makes an angle with the vertical. What is when the ball rolls off the hemisphere (the ball can not ride the surface of the hemisphere all the way down). 7) A box of mass m slides down a ramp, starting at the top. The ramp has a base of length B and height of H. There is friction between the box and the surface of the ramp. The coefficient of frictions are fx and pls. What is the velocity of the box when it reaches the end of the ramp? Can you use conservation of energy to solve this problem, why or why not? What is the work done by gravity? What is the work done by friction?

Answer 1

Dear student,

Find this solution, and RATE IT ,If you find it is helpful .your rating is very important to me.If any incorrectness ,kindly let me know I will rectify them soon.

Thanks for asking ..
D hl mg Copo-N=mu? R for contact loose , N=0 v² = egesse using energy Conservation, Yng R(1-Coso) = 2 mu? v2 = 2gR(1-Coo) from 1 & 0, &glooo= 298 11- Coso) Copo -21 - Copo (111 3 Copo =2 como = 6-48-1896

JB²H2 rigsinos JH²B² Conservative force friction is involve and it dissipates enersy. sino=H JH24B² Copo= B Inglong mg 1H Wganity = ungsins) & Jebar) = my Ma soka = mgh Al W friction=- fx JB²442 luping Cono) JB²442 =- Mking - - Meng. B and using work-energy theoren, - wig H- eleyhng B= tgh va V = 29 (H- MKB) # you cannot conserve B +H2 1442 What AKIE. because non- enersy