- #1

DanielleG

- 17

- 0

## Homework Statement

Answer True, False, or Cannot tell to each of the five statements below.- A small projectile is launched horizontally 1 m above the surface of a smooth, airless planet, with sufficient speed for orbit. A bug riding in a small hole in the projectile has apparent weight equal to zero.
- A ball on a string moves in a vertical circle. When the ball is at its highest point, the tension in the string is less than the ball's weight.
- The figure shows the radial acceleration
**a**r at four sequential points on the trajectory of a particle moving in a circle. The tangential acceleration at point 3 points up.

- All points on a rotating wheel have the same radial acceleration.
- A marble rolls around the inside of a cone. For the marble at the right side of the cone, the free body diagram is correct.

## Homework Equations

Not many equations for this, just theory

## The Attempt at a Solution

1) True! Apparent weight = 0 N in free fall.

2) Unsure, but am leaning towards false.

3) Cannot tell! Depends on which way the particle is moving.

4) False, depends on the way the wheel is rotating.

5) False, Fc should be pointing to the left, not the right.

I have only one try left, and I'm just very unsure about b on the most part. Any guidance concerning #2? Thanks in advance!