The force of friction is the same for both speeds since theradius of curvature i

Question

The force of friction is the same for both speeds since theradius of curvature is the same.

The force of friction needs to be twice as large.

The force of friction needs to be four times as large.

None of the above

A 90 g bead on a 60 cm long string is swung in a vertical circleabout a point 200 cm above the floor. The tension in the stringwhen the bead is at the very bottom of the circle is 5.9 N. A verysharp knife is suddenly inserted, as shown in the figure, to cutthe string directly below the point of support. How far to theright of the center of the circle does the ball hit the floor?

400 cm

520 cm

1200 cm

310 cm

7.1 s

32 s

45 s

5.0 s

the force of static friction must decrease in order for theperson not to slide off. the force of static friction must increase in order for theperson not to slide off. the force of static friction such that the person does notslide off remains the same

Explanation / Answer

1. the force of static friction must increase in order for theperson not to slide off. 2. The force of friction needs to be four times as large.

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