A car in an amusement park ride rolls without friction around the track it starts from rest at a point A from height H above the bottom of the loop. treat the car as a particle. what is the minimum value of height (in terms of R radius)such that the car doesn't fall off the very top of the ramp.
A walk through of how to this problem would be much appreciated I don't even know where to start!
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m = mass of block = 8.7 kg g = acceleration of gravity = 9.eighty one m/s^2 A = perspective of incline = 29.4 tiers mu = coefficient of kinetic friction = 0.fifty two v = preliminary speed of the block = a million.seventy one m/s regular tension to incline = N = m*g*cos(A) N = seventy 4.36 N Frictional tension = FF = N*mu = 38.sixty six N Now use conservation of capability. PE whilst the block is composed of relax = H*m*g the place H = height of block above the backside of the ramp exchange this to distance alongside the ramp: sin(A) = H/D so H = D*sin(A) PE = D*m*g*sin(A) = D*40-one.9 J preliminary kinetic capability = KE = (a million/2)m*v^2 = 6.37 J capability loss to friction = Ef = FF*D = 38.sixty six*D J The kinetic capability is dissipated by using friction and the whole capability on the coolest would desire to be purely the gravitational potential capability. So: KE = Ef + PE 6.37 = 38.sixty six*D + D*40-one.9 6.37 = D*eighty.fifty six D = 0.079 meters So the block will come to a end after traveling approximately 0.079 meters up the ramp be conscious. you additionally can look on the internet acceleration of the block. Gravitational tension performing down the incline = GF = m*g*sin(A) = 40-one.9 N internet tension performing down the airplane = GF + FF = eighty.fifty six N internet tension = m*a so a = (internet tension)/m a = 9.26 m/s^2 because of the fact the block is composed of a end we we are able to write: v = a*t and t = v/a = 0.13 seconds So the block is composed of a end after 0.13 seconds Distance = (popular speed)*time popular speed = a million.21/2 = 0.605 m/s ... because of the fact the block is composed of a end Distance = 0.079 m