6. Intro to Forces (Dynamics)
Vertical Forces & Acceleration
6. Intro to Forces (Dynamics)
Vertical Forces & Acceleration
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- Multiple Choice
The Mars Rover Perseverance weighed about 10,000 N while on Earth. After it reached the surface of Mars, it weighed about 3790 N. What is the gravitational acceleration on Mars?
- Multiple Choice
A 3-kg bucket is being pulled upwards by a cord. The tension in the cord is 35 N. What is the acceleration of the bucket? (The mass of the cord is negligible, which means you can assume m_cord = 0.)
- Multiple ChoiceA ball is dropped from a tall building. At one instant the force of drag on the ball was . What was the magnitude of the ball's acceleration at that instant?
- Multiple ChoiceFernanda is standing on a scale while riding an elevator. If the scale reads while the elevator is accelerating upwards at , what is Fernanda's mass?
- Open QuestionYou walk into an elevator, step onto a scale, and push the 'up' button. You recall that your normal weight is 625 N. Draw a free-body diagram. (b) If you hold a 3.85-kg package by a light vertical string, what will be the tension in this string when the elevator accelerates as in part (a)?
- Open QuestionAt the surface of Jupiter's moon Io, the acceleration due to gravity is g = 1.81 m/s2. A watermelon weighs 44.0 N at the surface of the earth. (b) What would be its mass and weight on the surface of Io?
- Open QuestionAt the surface of Jupiter's moon Io, the acceleration due to gravity is g = 1.81 m/s2. A watermelon weighs 44.0 N at the surface of the earth. (a) What is the watermelon's mass on the earth's surface?
- Open QuestionAn astronaut's pack weighs 17.5 N when she is on the earth but only 3.24 N when she is at the surface of a moon. (a) What is the acceleration due to gravity on this moon?