Question

The blades of a blender on a counter are rotating clockwise as you look into it from the top. If the blender is put to a greater speed what direction is the angular acceleration of the blades?

a) Clockwise
b) Counterclockwise
c) Radial outward
d) Radial inward

Answer 1

The angular acceleration of blender blades that are increasing in speed and rotating clockwise is in the clockwise direction. Therefore, the correct answer is option a) Clockwise

Step-by-step explanation:

If the blades of a blender are rotating clockwise when viewed from the top, and the blender is put to a greater speed, the direction of the angular acceleration is also clockwise.

This is because angular acceleration is in the same direction as the change in angular velocity. In this case, since the blades are speeding up and their rotation is clockwise, the angular acceleration that causes the increase in rotation rate is also clockwise.

By convention, counterclockwise rotation is considered the positive direction, therefore clockwise rotation and acceleration are taken as negative. But the question does not ask about the sign, just the direction, so the answer to the question is 'a) Clockwise'.

The direction of angular acceleration of the blender blades depends on the change in speed.

If the blender is put to a greater speed, the angular acceleration of the blades will be counterclockwise.

This means that the blades will accelerate in the counterclockwise direction as the speed of the blender increases.

Therefore, the correct answer is option a) Clockwise