An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. the angular velocity of the wheels follows the equation ? (t)=at? bsin(ct)fort? 0, where t represents time (measured in seconds), a = 0.500 rad/s2 , b = 0.250 rad/s and c = 2.00 rad/s . athere is a spot of paint on the front wheel of the bicycle. take the position of the spot at time t=0 to be at angle ? =0 radians with respect to an axis parallel to the ground (and perpendicular to the axis of rotation of the tire) and measure positive angles in the direction of the wheel's rotation. what angular displacement ? has the spot of paint undergone between time 0 and 2 seconds? bexpress the angular displacement undergone by the spot of paint at t=2 seconds in degrees. remember to use the unrounded value from part a, should you need it. cwhat distance d has the spot of paint moved in 2 seconds if the radius of the wheel is 50 centimeters?
Answers: 3
Physics, 22.06.2019 03:10
Athin plate moves between two parallel, horizontal, stationary flat surfaces at a constant velocity of v = 7.5 m/s. the two stationary surfaces are spaced 4 cm apart, and the medium between them is filled with oil whose viscosity is 0.9 n·s/m2. the part of the plate immersed in oil at any given time is 2 m long and 0.5 m wide. if the plate moves through the mid-plane between the surfaces, determine the force required to maintain this motion. what would your response be if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top surface (h1)? if the plate moves through the mid-plane between the surfaces, the force required to maintain the motion will be n. if the plate was 1 cm from the bottom surface (h2) and 3 cm from the top (h1) surface, the force required to maintain the motion would be n.
Answers: 2
Physics, 22.06.2019 11:00
Aperson walks first at a constant speed of 4.89 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 2.95 m/s. what is the average speed over the entire trip?
Answers: 1
Physics, 23.06.2019 00:20
An object with a mass of 1.5 kg changes its velocity from + 15 m/s to +22 m/s during a time interval of 3.5 seconds. what impulse was delivered to the objects?
Answers: 2
An exhausted bicyclist pedals somewhat erratically when exercising on a static bicycle. the angular...
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