This problem is based on a pendulum swinging from left to right. 1.If the pendul

Question

This problem is based on a pendulum swinging from left to right.

1.If the pendulum was "L" meters long and released at the angle shown, what speed "v" will the mass have at the instant the pendulum is vertical after starting from the angle shown below? (30 degrees)

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2.

This next question deals with the earth hurtling through space around the sun.
Consider the following forces on the Earth below:
1. Drag of Earth's Atmosphere
2. Solar Wind
3. Gravitational attraction to the sun.
Which force(s) are responsible for the Earth's motion around the sun?

1 only

1 & 2

3 only

1 & 3

1, 2, and 3

1 only

1 & 2

3 only

1 & 3

1, 2, and 3

Explanation / Answer

1)d

2)3 only.... as space is vaccum so no drag or friction

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