[" 38.A sphere can roll on a surface inclined at "],[" an angle "(2)/(theta)" if the friction coefficient is "],[" more than "(2)/(3)" g tan "theta" .Suppose the friction "],[" coefficient is "(1)/(7)g tan theta." If a sphere is "],[" released from rest on the incline,"],[" (a) it will stay at rest "],[" (b) it will translate and rotate about the "],[" ( "Y" .will translate and rotate about the "],[" (4) centre "],[" (d) the angular momentum of the sphere "],[" (d) the angular momentum of the sphere "],[" about its centre will remain constant."]