This is my holiday home work please anyone can solve it will get 25 points EXPERMENT NUMBER 1AIM: To determine the diameter of of a spherical bodywith the help of Vernier callipers.APPARATUS: Vernier callipers, and brass spherePRINCIPLE: Least count=value of one division of main scale/ number ofdivision on Vernier scalePROCEDURE: 1)Count the total number of divisionson the Vernier scale(n).2)Find the value of one main scale division(x) in cm.3) Calculate the least count of the Vernier using theformula L.C.= x/n4) Bring the two jaws of the Vernier callipers in Contact. See if the zero of the Vernier scale is in linewith the zero of the main scale the apparatus is freefrom zero error. If not, then see whether the zero ofthe Vernier scale lies on the right of the zero of themain scale or on the left of it. Read and record thematching division of the Vernier scale and calculatethe zero error with sign.5) Place the given bar betweem the jaws of theVernier callipers with its one end touching the fixedjaw and the other in contact with the movable jaw.Take the main scale reading in cm. Now see thedivision of the Vernier scale coincides with one of themain scale divisions. Read and record this number inthe table. Multiply this number of the Vernier scale'smatching division with the least count to get theVernier scale reading. Add this value with the mainscale reading to get the total reading.6) Repeat the process to get five readings for thelength fixed at different positions between thelowerjaws.7) Record your observations in a tabular form.Calculate the average of the five readings8) Calculate the correct diameter by subracting thezero error recorded earlier.OBERVATION TABLE: ....................CALCULATION:...................RESULT:..................PRECAUTIONS: 1)The zero error should be notedcarefully with proper sign and taken into account.2) The bar should be gripped between the jaws firmlybut gently.3) When the object is clamped between the jawsproperly the Vernier scale must be fixed by the screwattached with it so that any shifting of Vernier scalecan be avoided.EXPERIMENT NUMBER: 2AIM: To find the acceleration due to gravity with thehelp of a simple pendulum.APPARATUS: Brass bob, rubber bung, clamp withretort stand , thread, a stop watch, a Vernier callipersand a metre scale.PRINCIPLE: The formula for the time period of asimple pendulum......PROCEDURE: 1) Measure the diameter of the bob withthe help of a Vernier callipers correctly and calculateits radius and record.2) Tie the bob with one end of a silk thread about120 cm in length . Clamp the thread between two flatpieces of rubber bung clamped with the clamp of thestand.3) Adjust the length of the thread from rubber bung tothe base of the hook of the bob and equal to 60 cm.4) Calculate the effective length of the pendulum. L=length of the thread+ radius of the bob+hook length5) Keep the base of the stand near the edge of thetable top and let the bob be hung from the side easily.6)Pull the bob a little aside keeping the string taughand release. The bob will start oscillating about itsmean position.7) By the help of a stop watch measure the time of 20oscillations.8) Calculate the time period T and square of T up to 3significant figures and record in your table.9) Repeat this experiment for four more lengths of thethread . Calculate T and square of T and record in thetable.10)Plot a graph of L vs Square of T11) Determine the slope (S) of the line and thereforecalculate the value of 'g' = 4×(square of 22/7)×SOBSERVATION TABLE: 1) for radius of bob....2) for T..........CALCULATION:.....................RESULT:............................PRECAUTIONS: 1) The amplitude of oscillationsshould be small.2) The time should be measured carefully.3)The length of the pendulum should be changedatleast 10 cm to have considerable change in the timeperiod.4) All the calculations must be correct up to threesignificant figures.5) The experiment should be done at a place wheredisturbance due to wind , is minimum.INSTRUCTIONS: 1) These practicals should be writtenin practical file .2) If file is not available, no need to write but read andtry to understand how to do and write practicals.3) For Observation must leave half page andcalculation can be done on the left page of theobservations.4) Do not write these instructions in file.​

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