Starting from rest, disk A begins rotating with a counterclockwise angular acceleration of 3t rad/s2 (where...
A motor gives gear A an angular acceleration of aA- (2t) rad/s2, where t is in seconds 175 mm 100 mm C B a Tap image to zoom Part A If this gear is initially turning at wA 13 rad/s, determine the angular velocity of gear B when t3 s, measured counterclockwise. Express your answer using three significant figures. Enter positive value if the angular velocity is counterclockwise and negative value if the angular velocity is clockwise. rad/s WB
A disk of radius 1.5m initially at rest begins rotating about its center with constant angular acceleration of 0.2 rad/s2. Calculate the following: a) The angular velocity of the disk after 4s. b) The linear velocity of a point on the rim of the disk after 4s. c) The amount of rotation after 4s.
A motor gives gear A an angular acceleration of
αA=(2+0.006θ2)rad/s2, where θ is in radians. (Figure 1)
If this gear is initially turning at ωA = 15 rad/s , determine
the angular velocity of gear B after A undergoes an angular
displacement of10 rev, measured counterclockwise.
Express your answer using three significant figures. Enter
positive value if the angular velocity is counterclockwise and
negative value if the angular velocity is clockwise.
175 mm 100 mm CO
175 mm 100 mm...
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 4.20 rev/s; 75.0 revolutions later, its angular speed is 23.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 75.0 revolutions, (c) the time required to reach the 4.20 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 4.20 rev/s angular speed. _...
disk rolls without slipping such that it has an angular acceleration of a 8 rad/s2 and angular velocity of w 32 rad/s at the instant shown. Assume point A lies on the periphery of the disk, 150 mm from C. (Figure 1) Figure 1 of 1 500 mm 150 mm 400 mm
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 12 rev/s; 70 revolutions later, its angular speed is 19 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 70 revolutions, (c) the time required to reach the 12 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 12 rev/s angular speed.
A disk rotates about its central axis starting from rest and accelerates with constant angular acceleration. At one time it is rotating at 12.0 rev/s; 40.0 revolutions later, its angular speed is 18.0 rev/s. Calculate (a) the angular acceleration (rev/s2), (b) the time required to complete the 40.0 revolutions, (c) the time required to reach the 12.0 rev/s angular speed, and (d) the number of revolutions from rest until the time the disk reaches the 12.0 rev/s angular speed.
16. A wheel, released from rest, is rotating with constant angular acceleration of 2.6 rad/s2. At 6.0 s after its release: (a) What is its angular speed? (b) Through what angle has the wheel turned? (c) How many revolutions has it completed? (d) What is the linear speed and what is the magnitude of the linear acceleration of point 0.30 m from the axis of rotation? Ans: 16rads, 47 rad, 7.4rev, 4. m/s, 73 m/s2)
A thin disk begins to rotate from rest with a constant angular acceleration. The disk takes 1.2 seconds to make its second complete revolution. Find: 1) the time (in sec) it took the disk to make its first revolution; 2) the angular acceleration (in rad/sec2) of the disk.
2. The disk starts from rest and is given an angular acceleration a = (21) rad/s, where 1 is in seconds. Determine the angular velocity of the disk and its angular displacement when 1 = 4 s.