Physics-
General
Easy

Question

A frictionless track A B C D E ends in a circular loop of radius R comma figure. A body slides down the track from point A which is at a height h equals 5 blankcm. Maximum value of R for the body to successfully complete the loop is

  1. 5 cm    
  2. 15/4 cm    
  3. 10/3 cm    
  4. 2 cm    

The correct answer is: 2 cm


    For successfully completing the loop,
    h equals fraction numerator 5 over denominator 4 end fraction R rightwards double arrow R equals fraction numerator 2 h over denominator 5 end fraction equals fraction numerator 2 cross times 5 over denominator 5 end fraction equals 2 c m

    Related Questions to study

    General
    Physics-

    The resultant of a system of forces shown in figure is a force of 10 N parallel to given forces through R, where P R equals

    The resultant of a system of forces shown in figure is a force of 10 N parallel to given forces through R, where P R equals

    Physics-General
    General
    physics-

    The time taken by the projectile to reach from A to B is t comma then the distance A B is equal to

    The time taken by the projectile to reach from A to B is t comma then the distance A B is equal to

    physics-General
    General
    physics-

    Two identical discs of same radius R are rotating about their axes in opposite directions with the same constant angular speed omega. The discs are in the same horizontal plane. At time t equals 0, the points P and Q are facing each other as shown in figure. The relative speed between the two points P and Q is V subscript r end subscript as function of times best represented by

    Two identical discs of same radius R are rotating about their axes in opposite directions with the same constant angular speed omega. The discs are in the same horizontal plane. At time t equals 0, the points P and Q are facing each other as shown in figure. The relative speed between the two points P and Q is V subscript r end subscript as function of times best represented by

    physics-General
    parallel
    General
    Physics-

    A small body of mass m slides down from the top of a hemisphere of radius r. The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is

    A small body of mass m slides down from the top of a hemisphere of radius r. The surface of block and hemisphere are frictionless. The height at which the body lose contact with the surface of the sphere is

    Physics-General
    General
    Physics-

    The trajectory of a particle moving in vast maidan is as shown in the figure. The coordinates of a position A are open parentheses 0 , 2 close parentheses. The coordinates of another point at which the instantaneous velocity is same as the average velocity between the points are

    The trajectory of a particle moving in vast maidan is as shown in the figure. The coordinates of a position A are open parentheses 0 , 2 close parentheses. The coordinates of another point at which the instantaneous velocity is same as the average velocity between the points are

    Physics-General
    General
    physics-

    A point mass m is suspended from a light thread of length l comma fixed atO, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are

    A point mass m is suspended from a light thread of length l comma fixed atO, is whirled in a horizontal circle at constant speed as shown. From your point of view, stationary with respect to the mass, the forces on the mass are

    physics-General
    parallel
    General
    physics-

    A particle is projected from a point A with velocity u square root of 2 at an angle of 45 degree with horizontal as shown in figure. It strikes the plane B C at right angles. The velocity of the particle at the time of collision is

    A particle is projected from a point A with velocity u square root of 2 at an angle of 45 degree with horizontal as shown in figure. It strikes the plane B C at right angles. The velocity of the particle at the time of collision is

    physics-General
    General
    chemistry-

    Assertion: At constanpressurfothe change H2O(s)→H2O(gwordoninegative.
    Reason: Durinphastransitiowordone ialwaynegative.

    Assertion: At constanpressurfothe change H2O(s)→H2O(gwordoninegative.
    Reason: Durinphastransitiowordone ialwaynegative.

    chemistry-General
    General
    chemistry-

    Ivieof the signof DG° or the following reactions:
    PbO2 +Pb→2PbO,DrG°<0
    SnO2 +Sn→2SnO,Dr>0, whicoxidation statearmorcharacteristic for leaand tin?

    Ivieof the signof DG° or the following reactions:
    PbO2 +Pb→2PbO,DrG°<0
    SnO2 +Sn→2SnO,Dr>0, whicoxidation statearmorcharacteristic for leaand tin?

    chemistry-General
    parallel
    General
    chemistry-

    Considerthereaction:4NO2(g) O2(g)2N2O5(g) ,DH=–111kJ IfN2O5(s)isformedinsteadofN2O5(g)intheabove reaction,theDHvaluewillbe:(given,DHofsublimationfor N2O5is54kJmol )</span

    Considerthereaction:4NO2(g) O2(g)2N2O5(g) ,DH=–111kJ IfN2O5(s)isformedinsteadofN2O5(g)intheabove reaction,theDHvaluewillbe:(given,DHofsublimationfor N2O5is54kJmol )</span

    chemistry-General
    General
    chemistry-

    Thevalueofenthalpychange(DH)forthe reactionC2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l) at 27°Cis–1366.5kJmol–1.The valueofinter- nalenergychangefortheabovereactionat this temperaturewillbe-

    Thevalueofenthalpychange(DH)forthe reactionC2H5OH(l)+3O2(g)→2CO2(g)+3H2O(l) at 27°Cis–1366.5kJmol–1.The valueofinter- nalenergychangefortheabovereactionat this temperaturewillbe-

    chemistry-General
    General
    chemistry-

    Fromthethermochemicalreactions,C(graphite)+½O2 →CO;DH=–110.5KJ CO+1/2O2 →CO2;DH=83.2KJ Theheatofreactionof C(graphite)+O2 →CO2is-

    Fromthethermochemicalreactions,C(graphite)+½O2 →CO;DH=–110.5KJ CO+1/2O2 →CO2;DH=83.2KJ Theheatofreactionof C(graphite)+O2 →CO2is-

    chemistry-General
    parallel
    General
    chemistry-

    TheDH° for CO2(g) ,CO(g) and H2O(g) are 393.5,–110.5and–241.8Kjmol1respectively the standard enthalpychange (in KJ) for the reactionCO2(g)+H2(g)→CO(g)+H2O(g)is-

    TheDH° for CO2(g) ,CO(g) and H2O(g) are 393.5,–110.5and–241.8Kjmol1respectively the standard enthalpychange (in KJ) for the reactionCO2(g)+H2(g)→CO(g)+H2O(g)is-

    chemistry-General
    General
    chemistry-

    Which of the followingequationsrespresents standardheatofformationofCH4 ?

    Which of the followingequationsrespresents standardheatofformationofCH4 ?

    chemistry-General
    General
    chemistry-

    2molesof COaremixedwith 1moleofO2ina containerof1l.Theycompletelytoform2moles ofCO2.Ifthe pressurein the vesselchanges from70atmto40atm,whatwill bethevalue of DU in kJat500K(The gasesdeviateappreciably from idealbehaviour.) 2CO+O2→2CO2;DH=-560kJ/mol, 1Latm=0.1kJ For theprocessH2O(l)(1 bar,373K)→H2O(g) (1bar,373K),thecorrect setofthermodynamic parametersis-

    2molesof COaremixedwith 1moleofO2ina containerof1l.Theycompletelytoform2moles ofCO2.Ifthe pressurein the vesselchanges from70atmto40atm,whatwill bethevalue of DU in kJat500K(The gasesdeviateappreciably from idealbehaviour.) 2CO+O2→2CO2;DH=-560kJ/mol, 1Latm=0.1kJ For theprocessH2O(l)(1 bar,373K)→H2O(g) (1bar,373K),thecorrect setofthermodynamic parametersis-

    chemistry-General
    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.