Problem 1
a. Calculate the angular velocity of 30 cm diameter pulley if it recives motion through a rope that passes through a grooved wheel 15 cm diameter and rotates at 100 rad / s.
b. It is a system or reducing multiplier?
Problem 2
a. Determine the radius must have a pulley that rotates at 50 rad / s and it spins another 8 cm radius 150 rad / s using a belt.
b. It is a system or reducing multiplier?
Problem 3
How many teeth should have a gear that rotates at 40 rad / s and meshes with another gear with
60 teeth and rotational speed of 10 rad / s?
Problem 4
a. Consider two gears with straight teeth z1 = 12 and z2 = 60 teeth.
If w1 = 40 rad / s, work out w2
b. Is there any change in the direction of rotation of the second gear?
Problem 5
A bicycle plate has 54 teeth and the pinion 16. If you pedaling every 60 minutes:
a. How fast does the pinion rotate?
b. Calculate the speed at which the bicycle is moving in km / h if the radius of the wheel is 30 cm