Question

As a part of a robotics competition, a robotic arm with a rigid open hand at C is to be designed so that the hand catches an egg without breaking it. The egg is released from rest at t = 0 from point A. The arm, initially at rest in the position shown, starts moving when the egg is released. The hand must catch the egg without any impact with the egg. This can be done by specifying that the hand and the egg must be at the same position at the same time with identical velocities. A student proposes to do this using a constant value of 0 for which (after a fair bit of work) it is found that the arm catches the egg at /= 0.4391 s forÖ = -13.27 rad/s2. Using these values of t and Ö, determine the acceleration of both the hand and the egg at the time of catch.Then, explain whether or not using a constant value of 0, as has been proposed, is an acceptable strategy.

Question image 1Question image 2