A Level Physics

A simple pendulum oscillates with small amplitude, and its frequency is f. If its length is doubled, what is the new frequency of its motion?

The magnitude of the block's acceleration will be maximum at

• O

• A

• B

• All positions

Tags

NGSS.HS-PS2-1

• A

• B

• C

• D

Tags

NGSS.HS-PS2-1

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

What is the direction of the net force on an upsidedown roller coaster at the top of the loop?

• Up, toward the sky.

• To the right.

• To the left.

• Down, toward the ground.

Answer explanation

The net force is a combination of gravity and the normal force from the track, both of which are downward in this position.

Tags

NGSS.HS-PS2-1

An object with uniform circular motion, has constant _?_ but constantly changing _?_.

• speed, acceleration

• speed, direction

• acceleration, speed

• acceleration, velocity

Answer explanation

The "uniform" refers to the unchanging speed.

Any force or acceleration described as "centripetal" will always point _?_

• in the direction the object is moving

• tangential to the circle

• towards the center of the circle around which an object is moving

• towards the outer edge of the circle around which an object is moving

Answer explanation

The word centripetal means "toward the center" or "center-seeking."

The time it takes an object to make one complete trip around a circle is called the _?_.

• period

• frequency

• angular velocity

• rotational speed