Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
In sand-mold casting of a metal, it takes 180 seconds for complete solidification of a 27 cm3 cube-shaped casting. All other parameters remaining constant, the total solidification time (in seconds, rounded off to one decimal place) for a cylinder-shaped [radius = 1 cm and height = 6 cm] casting of the same metal, is _______.
Get every updates in your mailbox!
Video solution at 10:25. According to Choroniv rule, the time of solidification is related to square of length of casting. length is calculated by dividing volume by total area.
Video solution at 10:25.
According to Choroniv rule, the time of solidification is related to square of length of casting.
length is calculated by dividing volume by total area.
See lessSolidification time t = k (V/A)2 From the given data tcube = 180 sec where V = 27 cm3 so a = 3cm Putting the formula we get 180 = k (27/54)2 In case of cylinder having r = 1 cm and h = 6 cm Putting the formula hwe get t = k (rh/2h+2r)2 Where volume = Πr2 h and area = 2Πr2 + 2 Πrh Hence tcylinder = kRead more
Solidification time t = k (V/A)2
From the given data tcube = 180 sec where V = 27 cm3 so a = 3cm
Putting the formula we get
180 = k (27/54)2
In case of cylinder having r = 1 cm and h = 6 cm
Putting the formula hwe get t = k (rh/2h+2r)2
Where volume = Πr2 h and area = 2Πr2 + 2 Πrh
Hence tcylinder = k (6/14)2
Comparing solidification time equation of cube and cylinder we got solidification time of cylinder
t = 180* (6/7)2 = 132.24 sec
See less
See lessCorrect answer is in the range of 130-134. @Digbijaya igit described it best. Thank you. Some peripheral lines related to this topic: Solidification time, t= K (V/A)2
Correct answer is in the range of 130-134. digbijaya igit igit described it best. Thank you.
Some peripheral lines related to this topic:
See less