posted by .

At the local playground a child on a swing has a speed of 2.14 m/s when the swing is at its lowest point.
(a) To what maximum vertical height does the child rise, assuming he sits still and "coasts"? Ignore air resistance.

(b) To what maximum vertical height does the child rise if the speed is reduced to 1/5 the initial speed?

## Similar Questions

1. ### physics

Draw the figure, and calcuate the height above the bottom point the swing starts. (I remember it as 2.3(1-cos25)). the initial energy is mg*height. The final energy is 1/2 m v^2 The difference is frction. A 49 kg child on a 2.3 m long …
2. ### physics

A 25kg child on a 2m long swing is released from rest when the swing supports make an angle of 30 degrees with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. (b) If the speed of the child at the …
3. ### Physics

A 35kg child is swinging on a swing with length 2.8m to the bottom of the seat. At the highest point of the swing, the rope makes an angle of 42 degrees from vertical. Calculate the speed of the child at the bottom of the swing. Assume …
4. ### physics

a parent pushes a kid on a swing, A) If the child on the swing rises 2m above the lowest point during each cycle, what is her speed at the lowest point of the swing?
5. ### Physics

A 41 kg child sits in a swing supported by two chains, each 1.4 m long. If the tension in each chain at the lowest point is 261 N, find the child’s speed at the lowest point. (Neglect the mass of the seat.) Find the force of the …
6. ### Physics

A 22kg child on a 1.75m long swing is released from rest when the swing supports make an angle of 35 degrees with the vertical. 1.What is the child's maximum potential energy?
7. ### Physics help

A 31.0 kg child on a swing reaches a maximum height of 1.92 m above their rest position. Assuming no loss of energy: a) At what point during the swing will she attain their maximum speed?
8. ### Physics

A 31.0 kg child on a swing reaches a maximum height of 1.92 m above their rest position. Assuming no loss of energy: a) At what point during the swing will she attain their maximum speed?
9. ### physics

A 31.0 kg child on a swing reaches a maximum height of 1.92 m above their rest position. Assuming no loss of energy: a) At what point during the swing will she attain their maximum speed?
10. ### physics

A 25.0-kg child on a 3.00-m-long swing is released from rest when the ropes of the swing make an angle of 31.0° with the vertical. (a) Neglecting friction, find the child's speed at the lowest position. m/s (b) If the actual speed …

More Similar Questions