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Phys 161 Lab 6

Total questions: 12

Worksheet time: 4mins

Name
Class
Date
1.
  1. What is the SI unit of angular velocity (ω)?

a)

meters per second (m/s)

b)

radians per second (rad/s)

c)

revolutions per minute (rpm)

d)

Newtons (N)

2.
  1. If a rotating disc has an angular acceleration (α), how is tangential acceleration (aₜ) related to it?

a)
  1. at = α/r

b)

at = α⋅r

c)
  1. at = ω⋅r

d)

at = ω2\omega^2 r

3.

Which equation correctly represents torque (τ) when a force (F) is applied at a distance (r) from the pivot point?

a)

τ=Fr\tau=Fr

b)

τ=Fr\tau=\frac{F}{r}

c)

τ=F+r\tau=F+r

d)

τ=F−r\tau=F-r

4.

The moment of inertia (I) of an object depends on:

a)

Only its mass

b)

Only its shape

c)

Both mass and distribution of mass relative to the axis of rotation

d)

 Only its angular velocity

5.

In a rotary motion experiment, a hanging mass causes a pulley to rotate. Which force provides the torque?

a)

 Normal force

b)

Tension in the string

c)

Gravitational force on the pulley

d)

 Frictional force

6.

Which of the following is a significant source of error in a rotary motion lab?

a)

Air resistance

b)

 Friction in the axle

c)

Mass of the string

d)

All of the above

7.

 If a spinning ice skater pulls their arms inward, what happens to their angular velocity (assuming no external torque)?

a)

It decreases

b)

It increases

c)

It remains constant

d)

It becomes zero

8.

The rotational kinetic energy KrotK_{rot} of a spinning object is given by:

a)

Krot=12mv2K_{rot}=\frac{1}{2}mv^2

b)

Krot=12Iω2K_{rot}=\frac{1}{2}I\omega^2

c)

Krot =τΘK_{rot}\ =\tau\Theta

d)

Krot =FrK_{rot\ }=Fr

9.

What are you exploring in this experiment?

a)

The linear movement of an object

b)

The free fall of an object

c)

The rotational motion of a rigid object

d)

The linear movement of an object and the rotational motion of a rigid object

10.

Which concept are we becoming more familiar with?

a)

Angular acceleration

b)

Angular velocity

c)

Torque

d)

Moment of inertia

11.

Is there a deadline for submitting a lab grade appeal?

a)

You have 10 days to appeal the grade after it was displayed on Moodle. Any appeals after this period are not accepted.

b)

You can submit appeal in the end of semester

c)

You have 3 days to appeal the grade after it was displayed on Moodle. Any appeals after this period are not accepted.

d)

You have 5 days to appeal the grade after it was displayed on Moodle. Any appeals after this period are not accepted.

12.

What steps must be followed to appeal a lab grade?

a)

You should begin by emailing the professor

b)

email your LA indicating your laboratory section, laboratory name and number. State your arguments point by point.

c)

You should begin by emailing the lab coordinator.