Question

2. Below is a kick pedal for a bass drum. Determine the velocity of the point P and the force applied at that location (contact with the drum surface) using the following givens. The force in is 40N applied at a constant 3m/s 48mrn from point O. Link OA is the input link. θ2--1 680. p124mm from A а»100mm a version of this in class where we were able to derive the equation for MA for 4R mechanism MA = a sin/inn." Four esinvou For this mechanism, this vields 100 sin(1 131 -90D) 48 /-64 sína í 68-901)124 = 0.1662 Alternately, we could solve for the velocities of the input and output from the vector laops and gpiven info 02 s snasın= 62.5 rad/sec 0, -145.6rad/sec 0.04Bm The input velocity is šm/s the output velocity is MAにー= 0.1662,=-uut Given the MA from either method, the output force is 40-0.1662 -6.466

for theta 4 dot, how did we get 145.6 rad/s ?

Answer 1

for findin. eg-145. ç。adl sec we knou l degree /sec 0.0144 3adl ed to remove which is belo We onlv ne 131 egree e uoill use costant for fineling t 131 desree Second S melr SecOn meter cancel meterr L second voill cancol second eqee - so 131 3 x o.00