Post Lab Quiz: Atwood and Friction

The atwood machine pictured if mass 2 is greater than mass 1 which way will mass 2 move?

• right

• left

• up

• down

Tags

NGSS.HS-PS2-1

If m1 = m2, then the mass 1 will ___.

• remain in its current position relative to the position of mass 2.

• will move and stop in a position lower than the position of mass 2.

• will move and stop in a position higher than the position of mass 2.

• will move and stop in a position equal to the position of mass 2.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

By collecting the appropriate data, the students can determine the relationship between the acceleration of the cart and the net force exerted on the cart. Which of the following graphs should the students produce to show the correct relationship?

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

The students double the mass that hangs from the string. They also replace the original cart with a new cart that has double the mass. By doubling both masses, how will the tension in the string and the acceleration of the cart change?

• The tension and the acceleration will double.

• The tension will double, but the acceleration will stay the same.

• The tension will stay the same, but the acceleration will double.

• The tension and the acceleration will stay the same.

Tags

NGSS.HS-PS2-1

An Atwood’s machine is set up by suspending two blocks connected by a string of negligible mass over a pulley, as shown above. The blocks are initially held at rest and then released at time t =0 s. The speed of the 3 kg block at time t = 2.0 s is most nearly

• 2.0 m/s

• 4.0 m/s

• 7.0 m/s

• 10.0 m/s

Tags

NGSS.HS-PS2-1

A 0.30 kg ball is in a cup of negligible mass attached to a block of mass M that is on a table. A string passing over a light pulley connects the block to a 2.5 kg object, as shown above. The system is released from rest, the block accelerates to the right, and after moving 0.95 m the block collides with a bumper near the end of the table. The ball continues to move and lands on the floor at a position 2.4 m below and 1.8 m horizontally from where it leaves the cup. Assume all friction is negligible.

Calculate the magnitude of the acceleration of the block as it moves across the table. (Hint: Use horizontal velocity to plug into the equation)

• 3.5 m/s²

• 5.3 m/s²

• 15.3 m/s²

• 13.35 m/s²

Tags

NGSS.HS-PS2-1

A 0.30 kg ball is in a cup of negligible mass attached to a block of mass M that is on a table. A string passing over a light pulley connects the block to a 2.5 kg object, as shown above. The system is released from rest, the block accelerates to the right, and after moving 0.95 m the block collides with a bumper near the end of the table. The ball continues to move and lands on the floor at a position 2.4 m below and 1.8 m horizontally from where it leaves the cup. Assume all friction is negligible.

If the mass of the ball is increased, the horizontal distance it travels before hitting the floor will...

• decrease.

• increase.

• stay the same.

Tags

NGSS.HS-PS2-1

How much is Fnet on the system?

• 40 N

• 50 N

• 10 N

• 4 N

Tags

NGSS.HS-PS2-1

For the system of attached masses m1 & m2, which mass will have a higher acceleration?

• m1

• m2

• Both will have same acceleration because they're attached by a string

Tags

NGSS.HS-PS2-1

In the figure below, on which side of the pulley will the string accelerate downward?

• right side

• left side

• will not accelerate

Tags

NGSS.HS-PS2-1