A 0.80-kg object tied to the end of a 2.0-m string swings as a pendulum. At the lowest point of its swing, the object has a kinetic energy of 10 J. Determine the speed of the object at the instant when the string makes an angle of 50° with the vertical
a. 5.6 m/s
b. 4.4 m/s
c. 3.3 m/s
d. 5.0 m/s
e. 6.1 m/s
C
You might also like to view...
Collisions in Two Dimensions: A car heading north suddenly collides at an intersection with a truck of the same mass heading east. If they lock together and travel at 28 m/s at 15° north of east just after the collision, how fast was the car initially traveling?
A. 14 m/s B. 7 m/s C. 28 m/s D. 11 m/s
According to current understanding, what is a quasar?
A) an active galactic nucleus that is particularly luminous B) a large galaxy thought to be formed by the merger of several smaller galaxies, typically found in the center of a galaxy cluster C) Any object with an extremely large redshift is called a quasar. D) a galaxy with an unusually high rate of star formation
Laccoliths and sills are examples of ______________ plutons
Fill in the blank(s) with correct word
A box is sliding down an incline tilted at a 12.0° angle above horizontal. The box is initially sliding down the incline at a speed of 1.50 m/s. The coefficient of kinetic friction between the box and the incline is 0.340
How far does the box slide down the incline before coming to rest? A) 0.920 m B) 2.33 m C) 1.78 m D) 0.720 m E) The box does not stop. It accelerates down the plane.