Question

In: Physics

One end of a cord is fixed and a small 0.400-kg object is attached to the...

One end of a cord is fixed and a small 0.400-kg object is attached to the other end, where it swings in a section of a vertical circle of radius 1.00 m, as shown in the figure below. When

θ = 18.0°,

the speed of the object is 7.50 m/s.

An object is swinging to the right and upward from the end of a cord attached to a horizontal surface. The cord makes an angle θ with the vertical. An arrow labeled vector v points in the direction of motion.

(a) At this instant, find the magnitude of the tension in the string.
N

(b) At this instant, find the tangential and radial components of acceleration.

at =

 m/s2 inward

ac =

 m/s2 downward tangent to the circle


(c) At this instant, find the total acceleration.
inward and below the cord at  °

(d) Is your answer changed if the object is swinging down toward its lowest point instead of swinging up?

Yes/No     


(e) Explain your answer to part (d).

Solutions

Expert Solution

The component of gravity provides a tangential acceleration to the object, thus changing it's speed.

genius_generous answered 2 years ago
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