A metre scale has a weight of 10 grams at a distance of 20 cm from the pivot. To balance this a student places another weight at a distance of 35 cm. Calculate the mass of this weight.

Q 1: A student is finding the weight of a metre rule using the apparatus shown in Figure 1. Figure 1 (not to scale)  He places the load P = 1.00 N on the metre rule at the 5.0 cm mark.  He places the metre rule on the pivot at the 45.0 cm mark.  He places load Q = 0.80 N on the rule and adjusts its position so that the metre rule is as near as possible to being balanced. He measures  the distance x (between the centre of load P and the pivot)  the distance y (between the centre of load Q to the pivot) He repeats the procedure, placing the load P at the 10.0 cm mark, at the 15.0 cm mark, at the 20.0 cm mark and at the 25.0 cm mark. The readings are shown in Table. Table 1 x ( ) y ( ) A = P x ( ) B = Q y ( ) 40.0 42.5 35.0 36.0 30.0 30.0 25.0 24.0 20.0 17.5 (i) In the table 1: (a) Complete the column headings/units. [1 ] 5 (b) Complete the column A = P x. [1] (c) Complete the column B = Q y. [1] (ii) Plot a graph of A (y-axis) against B (x-axis). Start both axes at the origin (0,0). [1 ] (iii) Using the graph, determine the vertical intercept Y (the value of A, when B = 0 N cm). Show clearly on the graph how you obtained this value. Y = [1] (iv) Calculate the weight W of the metre rule using the equation W = Y/z , where z = 5.0 cm. W = [1] 6 (v) Suggest one practical reason why it is difficult to obtain exact results with this experiment. [1] (vi) The student uses an accurate electronic balance to obtain a second value for the weight of the metre rule. weight obtained on the balance = 1.24 N State and justify whether the two values for the weight agree within the limits of experimental accuracy. Statement [1 ] Justification [1 ]

Three masses are attached to a uniform MASSLESS meter stick, as shown in figure above.  The masses to the left of the fulcrum are m1 = 7.75kg and m2 = 9.2 kg. Find the mass that balances the system when it is attached at the right end of the stick. Round your answer to the nearest tenth decimal place

A meterstick is balanced on a fulcrum placed at the 75 cm mark by 0.23 kg mass hanging at the 85 cm mark. Find the mass of the meterstick.

A meter stick is supported at the 50-cm mark. A 0.40 kg mass is hanging at the 20 cm mark and a 0.60 kg hanging at the 80-cm mark. Where should a third mass that weighs 0.30 kg be hung to keep the stick balanced?

An unknown mass and a 1.00 kg mass are fixed at opposite ends of a bar. The bar has negligiblemass and a length of 30.0 cm.The bar balances when supported by a pivot placed 20.0 cm from the unknown mass, as shown.barpivot20.0 cm1.00 kg mass30.0 cmunknown massWhat is the unknown mass?A 333 g B 500 g C 667 g D 1000 g