Question

Answer The Following:
(1) A metre rule balances when the 50 cm mark is directly above a pivot.
(a) State where in the rule its centre of mass is located.

(b) Fig. 3.1 shows an apple and a 0.40 N weight placed on the rule so that the rule remains balanced at the 50 cm mark.
The centre of mass of the apple is 25 cm from the pivot and the centre of mass of the weight is 45 cm from the pivot.
Calculate
(i) the weight of the apple
(ii) the mass of the apple.



(c) The apple is not moved. The weight is removed from the rule and the pivot is moved to the left until the rule balances as shown in Fig. 3.2.

(i) Explain why the arrangement in Fig. 3.2 balances.
(ii) The pivot in Fig. 3.2 is closer to the 50 cm mark than to the centre of mass of the apple.Compare the weight of the rule to the weight of the apple.

Answer 1

Answer:

tubushaya , shijjanya ......