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A bead slides at constant speed along a curved string in the horizontal plane as shown

If we draw an arrow to represent the force exerted by the line on the bead at point A, this arrow will...






Question 16Select one:

A.
towards the top of the drawing


B.
downwards of the drawing


C.
horizontal direction to the left of the drawing


D.
horizontal direction to the right of the drawing

User JdeBP
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1 Answer

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If we draw an arrow to represent the force exerted by the line on the bead at point A, this arrow will lean towards the top of the drawing.

Option A is correct

The force exerted by the line on the bead at point A is called the centripetal force. Centripetal force is always directed towards the center of the circular path that the bead is following.

In this case, the center of the circular path is at the top of the drawing and the arrow representing the centripetal force will point towards the top of the drawing.

If the arrow will lean downwards of the drawing it would be the direction of the gravitational force, but not the centripetal force and if it leans towards the horizontal direction to the left of the drawing it would be the direction of the frictional force, but not the centripetal force.

User Qerub
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