18 Questions
What is the magnitude of the torque applied in the given example?
320 N·m
What is the gravitation acceleration on the Moon?
1.625 m/s²
What is the weight of an 8-kg rover on the Moon?
12.6 N
What is the purpose of a wrench in the context of the given example?
To provide a lever arm to increase the torque applied to a bolt.
What is the relationship between force and torque?
Torque is the product of force and distance from the axis of rotation.
What is the role of the angle θ in the torque formula?
It determines the magnitude of the torque.
What is the relationship between force, mass, and acceleration according to Newton's second law of motion?
Force = Mass x Acceleration
What is the definition of weight in the context of forces?
The downward force exerted by a mass due to gravity
In the example given, what was Jenkins' acceleration when he hit the brick wall?
45 m/s^2
Which of the following formulas represents the relationship between weight, mass, and the acceleration due to gravity?
Weight = Mass x Acceleration due to gravity
If the force generated by the astronaut's propulsion unit is 30 N, what will happen to the value of this force as the astronaut accelerates?
The force will remain constant
What is the magnitude of the torque in the given example?
$10 \text{N}\cdot\text{m}$
If Jenkins had a mass of 100 kg instead of 80 kg, what would be the force exerted on him when he hit the brick wall?
4500 N
Which of the following is NOT a method to calculate mass?
Mass = energy / speed of light
If an object has a mass of 20 kg on Earth, what would be its weight on the Moon, where the gravitational acceleration is approximately one-sixth of Earth's?
$32.67 \text{N}$
What is the unit of measurement for weight?
Newton (N)
If the density of ethyl alcohol is $789 \text{kg}/\text{m}^3$ and it is filled in a beaker of $200 \text{mL}$, what is the weight of the ethyl alcohol in the beaker?
$1.578 \text{N}$
What is the SI unit of mass?
Kilogram (kg)
This quiz covers the calculation of torque using force, distance, and angle, as well as the measurement of mass in physics. Topics include torque formula, unit of torque, mass definition, SI unit of mass, and methods for measuring mass.
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