A wheel with radius 0.441 m rotates 5.59 times every second. Find the period T of this motion. T = What is the tangential speed v of a wad of chewing gum stuck to the rim of the wheel? U = m/s
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- George swings a ball around him, in uniform circular motion. The circle's radius is r. George inadvertently releases the string, and the ball goes outward. He catches the string again, and now the ball goes around him at a new rotation rate, with a new radius r + Δr. Calculate the new rotation rate (in rev/s). r = 3.0 m Δr = 1.0 m Original rotation rate = ωi = 1.1 rev/s The ball's mass is m = 160 gramsA centrifuge in a medical laboratory rotates at an angular speed of 3,550 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration (in rad/s2) of the centrifuge.The period of a stone swung in a horizontal circle on a 2.50-m radius is 1.20 s. (a) What is its angular velocity in rad/s? (b) What is its linear speed in m/s? (c) What is its radial acceleration in m/s2?
- The bus's wheels have a radius 26 cm. The bus starts at rest and accelerates at a constant speed until it reaches an angular speed of 10.4 rev/s. During this period, the bus moved 100 m. How many revolutions does the wheel go through?A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off, it continues to rotate with a constant angular deceleration for 10.7s before coming to rest.How many revolutions did the centrifuge complete after being turned off?Δθ= (?) revAn object moves uniformly around a circular path of radius 22.0 cm, making one complete revolution every 2.20 s. ONLY ANSWER C PLEASE, I HAVE A & B (a) What is the translational speed of the object?0.628m/s(b) What is the frequency of motion in hertz?0.454Hz(c) What is the angular speed of the object?rad/s
- You take a ride in a ferris wheel. Starting from rest, you accelerate for 0.45 revolutions, until you reach an angular velocity of 0.14 radians per second. How much time has elapsed since the start of the ride? Give answer in two significant digitsAnswer the question correctly. Thank you!!A Ferris wheel has a radius of 30 m and its centre is 32 m above the ground. It rotates once every 48 s. Ethan gets on the Feris wheel at the lowest point and then the wheel starts to rotate. The amount of time it takes Ethan to reach 38 m above the ground for the first time, to the nearest tenth of a second, is S. Your answer
- A diver runs horizontally off the end of a diving tower 3.5m above the surface of the water with an initial speed of 2.5 m/s. During her fall she rotates with an average angular speed of 2.6 rad/s How many revolutions has she made when she hits the water? Express your answer using two significant figures.Δθ= (?) revThe blades in a blender rotate at a rate of 6200 rpmrpm . When the motor is turned off during operation, the blades slow to rest in 2.6 s. What is the angular acceleration as the blades slow down?