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/Please, solve and explain the following 3 questions of physics?

A man of 70 kg is in contact against the inner wall of a cylindrical drum 3m hole radius of rotation around its vertical axis 200rev/min The coeffcietnt of static friction between the wall and your clothing is 0.15. What is the speed OFTHE cylinder rotation for at least a man to remain stuckto wall without falling on the ground were suddenly removed? 2 A disk rotates at a speed of 33 1 / 3 rpm per minute and has a radius of 15 cm. Two coins are placed at 4 cm and 14 cm from the center of the disc. If the effective cooperation of friction between the coin and the record is 0.15, that of the coins will turn to the record and why? 3 A thin circular loop of radius R rotating about its vertical diameter with a angularfrequency w (omega). Demonstrate a small account in the loop of wire remains at its lowest point for W2 (omega square) <= g / R. What is the angle made by the radius vector connecting the center of the account with the vertical downward direction for W2 = 2 g / R? Ignore friction.

Find the equation of circular motion of a body, in his book or on the Internet and think through which are applicable in each case. Draw a diagram of vectors and then use the equations.

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