Laboratory exercises to accompany Carhart and Chute's First principles of physics . an inclinedboard in the laboratory. We also wish to find out themechanical advantage of the plane. This is the numberwhich is obtained by dividing the resistance by the the inclined plane the mechanical advantage may befound also from the dimensions of the plane. We shallseek to find what dimensions are used and what division ismade to obtain the mechanical advantage. Experimental: An iron car loaded with a 500-gram weight will be usedand it is to be pulled up an inclined plane by means of acord attac
Laboratory exercises to accompany Carhart and Chute's First principles of physics . an inclinedboard in the laboratory. We also wish to find out themechanical advantage of the plane. This is the numberwhich is obtained by dividing the resistance by the the inclined plane the mechanical advantage may befound also from the dimensions of the plane. We shallseek to find what dimensions are used and what division ismade to obtain the mechanical advantage. Experimental: An iron car loaded with a 500-gram weight will be usedand it is to be pulled up an inclined plane by means of acord attached to a spring balance. This balance thusmeasures the force employed to draw the car up the plane. 100 LABORATORY EXERCISES The combined weight of the car and its load is the weightlifted by the use of the plane. It may be found with thespring balance. The dimensions of the plane are to bemeasured, as shown in Fig. 39. Correction is to be made for some friction. This maybe eliminated by averaging the reading of the balancewhen the car is moving uniformly up the incline with the. Fig. 39. reading when it is moving uniformly down the in each case whether the friction is a help or a hin-drance. The work done along the plane is measured bythe product of the balance reading and the length of theplane (to A). The work done in raising the weight anequal distance is measured by the product of the weightlifted and the height of the plane (at .A). Record the observations in tabular form near the top ofthe left-hand page. Observations Weight of car and load .Force required, car ascendingForce required, car descendingLength of plane ....Height of plane .... 9- ff- cm. cm. THE INCLINED PLANE 101 Make a simple sketch of your apparatus and write ashort description of the method of the experiment. Place the table of calculated results at the top of theright-hand page. Calculated Results Average force used c g. Work = weight lifted x height of plane . . Work = force x length
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectphysics, bookyear1913
