- d)A fixed solid disc pulley is acted upon by a torque of 12 Nm. If the mass of the disc is 0.6 Kg, calculate the acceleration of the pulley if the radius of the pulley is 0.2 m (5 Marks) e) A rod of diameter 4 cm, length 48 cm and mass 1.2 kg rotates through its centre with axis parallel to its length Find the Moment of inertia (5 Marks) f) Define a couple of force (2 Marks) g) For a solid cylinder of radius 24 cm and mass 3.2 kg find the radius of gyration (5 Marks)
- In the experiment, the motion of a body was investigated, as a result of which the average speed and its absolute error were obtained bar (V)=312.0m/s Delta bar (V)=20.483ldots m/s Please indicate the correct record of the final result of this experiment V=(312.0pm 20.5)m/s
- QUESTION ONE (34 MARKS) a) Match the follow ing quantities of linear motion with the respective quantities of angular mokion (2 Marka) is Foecie a. Main b) A fores of F is applied an angle of 30^circ to tangent of a ply wheel of radius 30 cm. If the torquer on the ply wheel 36 N Find F (4 Marks) c) There masses of mass 80g, 60g and 90 g are placed at the vertices of an equilateral triangle of whes 5 m the system rotates about an axis perpendicular to the plane of the triangle and through the centre of mass. Find the moment of inertia (8 Marks)
- How to eliminate matic errors? before the experiment , it is necessary to check the used device in a specialized labo ratory completely systematic errors cannot be avoided involve a colleague to take measurements it is necessary to measure the investigated parameter severa 1 times with the same device
- What determines the format of the experimental value being studied (how many and what numbers should be left in the answer after its calculation , if direct me asurements in the calculation formula were multiplied? the format of the experiment result is determined by the number of decimal places in direct measurements the final result is rounded at the choice of the experimenter from the least number of significant digits in values of all direct measur ements It is enough to leave hundredths in the answer
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