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newton law of motionsecond lawthe rate of change of momentum is proportional to external force applied on the body and take place in the same
newtons law of motionsol the entire system of dynamics is based on the three laws of motion that are basis assumptions and were initially formulated
rigid body and momentumbody a body consists of a number of particles it has definite shaperigid body a rigid body can be defined as the
matter particle and weight sol matter matter is anything which occupies space and have some mass offers resistance to any stress for example iron
kineticsdefine kinetics what is plane motionsol kinetics is that branch of mechanics which deals with force system that produces acceleration and
rope drivewhat do you mean by the term rope drivesol the ropes are circular in section rope-drive is mostly used when distance between the driving
initial tension in the beltlet to initial tension in beltt1 tension in tight sidet2 tension in slack sidetc centrifugal tension in
steps for solving problem for finding maximum power1 use formula stress sigma force maximum tensionareawhere area bt that is tmax sigmabt2
steps for solving problem for finding power1 use formula stress s force maximum tensionareawhere area bt that is tmax sigmabt2 unit mass m rbtl
consideration1 from above equation it is clear that centrifugal tension is not dependent of t1 and t2 it depends upon velocity of the belt for lower
concept of centrifugal tensionexplain concept of centrifugal tension in any belt drive what is main consideration for taking maximum tensionsol the
open belt drivean open belt drive connects the two pulleys 120cm and 50cm diameter on parallel shafts which are apart 4m the maximum tension in belt
find out the safe power transmitted by pulleya belt drives pulley of 200mm diameter such that ratio of tensions in tight side and slack side is 12 if
initial tension in the beltsol the tension in belt which is passing over the two pulleys that is driver and follower when the pulleys are stationary
evaluate power transmitted by belt sol let t1 tension in tight side of the beltt2 tension in slack side of the beltv velocity of belt in
equilibrium of body on the rough inclined planeif the inclination is less than angle of friction the body remains in equilibrium without any external
types of frictionthere are basically two types of frictiona dry friction b fluid frictiondry friction dry friction also called as coulomb
friction is undesirablea friction is undesirable at the time of ice skating or when the block is lifted or put down on the truck with the help of
friction is desirable a friction is much desirable to stop the body from its moving condition if there is no friction between contact surfaces then
laws of solid frictionsol the friction which exists between two surfaces that are not lubricated is called as solid friction the two surfaces can be
fluid frictionfluid friction manifests when the lubricating fluid is introduced between contact surfaces of the two bodiesif thickness of lubricant
dry friction dry friction also called as coulomb friction manifests when the contact surfaces are dry and there is tendency for the relative
law of coulomb frictioncoulomb in the year 1781 presented certain conclusions which are called as coulombs law of friction these observations are
kinetic dynamic frictionwhen applied force exceeds limiting friction the body starts moving over the other body and the friction of resistance
static friction when applied force is less than limiting friction body remains at rest and this type of frictional force is called as static friction