A circular cart-wheel spins at 2.5 rev/sec. Every point on the circumference of the wheel has the same: A) tangential speed and angular velocity B) angular velocity and angular position C) angular position and tangential speed D) None of the above
A circular cart-wheel spins at 2.5 rev/sec. Every point on the circumference of the wheel has the same:
A) tangential speed and
B) angular velocity and angular position
C) angular position and tangential speed
D) None of the above
A crowbar is used to remove a nail. The force that the worker applies is 220 N. If the force arm is 5
times the length of the resistance arm, then how much force is applied to the nail?
A) 44 N
B) 220 N
C) 1100 N
D) None of the above
What is the centripetal acceleration of a wheel of radius 0.2m spinning with an angular velocity of 3
rev/sec?
A) 0.6 m/s2
B) 1.2 m/s2
C) 11 m/s2
D) 71 m/s
Solution:
We have given that
A circular cart-wheel spins at 2.5 rev/sec. Every point on the circumference of the wheel has the same
we know that the angular velocity does not change in the uniform Circular motion
so the angular velocity remains same
and note that when there is a tangential acceleration, the tangential speed is changing
so the potion B) angular velocity and angular position
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