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

Question

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

Quizplus · Accepted Answer

The Answer of 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

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