VIrtual RAMP Force and Motion

PERCOBAAN 4 RAMP: FORCE AND MOTION A. Tujuan juan Percoba Percobaan an experimentally determine the relationship between the mass of an object and how 1. To experimentally far it slides from the bottom of a ramp. experimentally determine the relationship between the angle ang le of a ramp and how 2. To experimentally far an object slides from the bottom of a ramp. 3. To confirm the experimentally determined relationship with a theoretical derivation. B. Teori ori Dasa Dasarr C. Aa! Aa! "an "an Ba# Ba#an an 1. PC/Notebook  . !irt"al !irt"al #aboratory #aboratory softwar softwaree $%amp& $%amp& 'orce 'orce and (otion) (otion) D. Pros Prose"u e"urr Perco Percoba baan an *o" will be starting with a crate that has a mass of 1++ kg and a coefficient of sliding friction of +., and a coefficient of static friction of +.1. raw raw the 'ree ody iagr iagram am $a pict"re pict"re showin showing g the forces forces on the crate) before before yo" apply any force.

. 0dd 0dd 1+ N of appl applie ied d forc force e and p"sh p"sh the the b"tt b"tton on and and reco record rd what what happ happens ens.. 2ncl"de a free body diagram d iagram showing all the forces. ,. 0dd 1++ N of applied applied force and p"sh the b"tton. b"tton. 3hat changed4 changed4 5. 6se the frict friction ion e7"ati e7"ation on to calc"lat calc"latee how m"ch force force wo"ld be re7"ir re7"ired ed to get it moving. moving. 8how yo"r work work here9.. here9.. Try it o"t. 3hat happened4 happened4 :ow :ow did yo" fix fix the problem to get it moving4 -. 3hat 3hat happe happene ned d as the crate crate move moved d "p the ramp4 ramp4 8how 8how the fre freee body diagr diagram am while the crate is on the ramp. 3hat force is working against yo"r applied force4 ;. %eset %eset all. all. Predict Predict what what yo" yo" think think wo"ld wo"ld happen happen if yo" yo" increa increased sed the the angle. angle. 3hat 3hat act"ally happened4 . Place Place the the crate crate on the the ramp ramp with with the angl anglee at +o. 3hat is is tr"e abo"t abo"t the parall parallel el force force and the frictio friction n force if the crate crate does not go down the ramp4 8lowly 8lowly increase the angle "ntil the block ?68T starts to move. 6se the angle to calc"late @s and compare to the given val"e for @s for the crate. A. Calc"l Calc"late ate how m"ch m"ch force force yo" wo"ld wo"ld have to apply apply to the the crate crate to get it to go at o constant speed "p the ,+  ramp. 8how yo"r work below and record yo"r answer to the tenth of a Newton $:int& %emember itBs moving now so which @ do yo" need to "se4) 1+. o to the D'orces raphE tab. %eset all. 2np"t yo"r applied applied force and p"sh play. 8top the crate before it crashes into the wall. 2s yo"r net force F + $' s"m )4 3hat does that tell yo" abo"t the motion of the crate4 11. Place the block block at the the top of the the ,+o ramp $Position F >.A m). 3hat is the net force on the the bloc block k down down the ramp ramp44 $8ho $8how w yo"r yo"r calc"l calc"lat atio ion n below below). ). 3hat 3hat is the the

acceleration of the block down the ramp4 $2ncl"de in yo"r calc"lation). 3hat wo"ld be the final velocity of the block at the bottom of the ramp4 1. 3hat force is acting on the crate once it hits the flat part at the bottom of the ramp4 3hat is the magnit"de and direction of that force4 1,. 3hat will be the acceleration of the crate on the flat part at the bottom of the ramp4 15. Calc"late how far the crate sho"ld slide at the bottom. Try it o"t. :ow did yo"r  calc"lation compare to the applet res"lt4 15.Change yo"r object to the D(ystery GbjectE and red"ce yo"r angle. 6sing what yo" learned above calc"late the mass @s and @k for the (ystery Gbject. 8how all yo"r meas"rements and yo"r work. e caref"l to state whether yo"r meas"rement is on the ramp or on the flat part. $:int& 8tart by finding @s first with the ramp raising). *o" may need to reset all occasionally.