Theory of machine

A punching machine carries out 5 holes per minute. Each hole of 30 mm dia in 40 mm thick plate requires 10 NM of energy per mm^2 of the sheared area. The punch has a stroke of 90 mm. find the power of the motor required if the mean speed of the flywheel if 20 m/s. If the total fluctuation of speed is not to exceed 2% of the mean speed. Determine the mass of the flywheel?

  1. 👍 0
  2. 👎 0
  3. 👁 206

Respond to this Question

First Name

Your Response

Similar Questions

  1. MATH


    asked by ALISA on October 18, 2017
  2. Maths

    Plastic drinking straws are manufactured to fit into drinks cartons which have a hole in the top. A straw fits into the hole if the diameter of the straw is less than 3 mm. The diameters of the straws have a normal distribution

    asked by Anon on September 13, 2016
  3. Physics

    A machine part is made from a uniform solid disk of radius R and mass M. A hole of radius R/2 is drilled into the disk, with the center of the hole at a distance R/2 from the center of the disk (the diameter of the hole spans from

    asked by mymi on October 24, 2011
  4. Math

    A copy machine makes 60 copies per minute. A second copy machine makes 80 copies per minute. The second machine starts making copies 2 minutes after the first machine starts. Both machines stop making copies 8 minutes after the

    asked by Jacob on February 6, 2013
  5. Maths

    Pegs are to be placed in the four holes shown, one in each hole. The pegs come in different colours and pegs of the same colour are identical. Calculate how many different arrangements of coloured pegs in the four holes can be

    asked by Raj on August 22, 2019
  1. Anatomy

    A karate instructor uses his hand to chop a plank of hard wood, and then uses his closed fist to punch a soft practice bag. Which statement is true of the graded potentials of each action? A. Neither action contains a great enough

    asked by Anonymous on November 4, 2017
  2. Probability and Statistics

    An oil prospector will drill a succession of holes in a given area to find a productive well. The probability that he is successful on a given trial is 0.2. a) What's the probability that that the third hole drilled is the first

    asked by Katy on September 29, 2013
  3. college finite math

    A product may be made using Machine I or Machine II. The manufacturer estimates that the monthly fixed costs of using Machine I are $17,000, whereas the monthly fixed costs of using Machine II are $14,000. The variable costs of

    asked by Dee on January 19, 2014

    A company makes three products X, Y and Z. Each product requires processing by three machines A, B and C. The time required to produce one unit of each product is shown below. Product X:- Machine A: 1 Machine B: 2 Machine C: 2

    asked by kIM on July 11, 2011
  5. MATH

    The volume of a cone shaped hole is 16 pi ft^3. If the hole is 3 ft deep, what is the radius of the hole?

    asked by CONFUSED PLEASE HELP on April 29, 2018

You can view more similar questions or ask a new question.