A 40-Kg Mass Attached to the End of a String Swings

question 7

Multiple Choice

A 4.0-kg mass attached to the end of a string swings in a vertical circle of radius 2.0 m. When the string makes an angle of 35° with the vertical as shown, the speed of the mass is 5.0 m/s. At this instant what is the magnitude of the force the string exerts on the mass?

• A) 50 N
• B) 82 N
• C) 89 N
• D) 11 N
• E) 61 N

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Definitions:

Skipping

Skipping can refer either to a physical jumping movement often seen in children's play or to omitting or bypassing something in a sequence.

Jumping

A physical action involving propelling oneself off the ground using one's legs, which is a fundamental motor skill developing in early childhood.

Psychological Closeness

The feeling of being emotionally connected or intimate with another individual or group.

Play

Engaging in activities for enjoyment and recreation rather than a serious or practical purpose, often associated with children.